diff --git a/src/kicad_sexpr/token.gleam b/src/kicad_sexpr/token.gleam
index 89599d7..fdf59d3 100644
--- a/src/kicad_sexpr/token.gleam
+++ b/src/kicad_sexpr/token.gleam
@@ -19,40 +19,40 @@ fn allowed(then next: NextFn(Bool, a)) -> Decoder(a) {
   decode.enum(with: [#("allowed", True), #("not_allowed", False)], then: next)
 }
 
-fn optional_fill(then next: NextFn(Option(Bool), a)) -> Decoder(a) {
-  decode.optional(
-    decode.token_wrapper(named: "fill", with: yes_no, then: _),
+fn fill_flag(then next: NextFn(Bool, a)) -> Decoder(a) {
+  decode.token_wrapper(named: "fill", with: yes_no, then: next)
+}
+
+fn angle(then next: NextFn(Float, a)) -> Decoder(a) {
+  decode.token_wrapper(named: "angle", with: decode.float, then: next)
+}
+
+fn corners(then next: NextFn(#(XY, XY, XY, XY), a)) -> Decoder(a) {
+  decode.token(named: "pts", then: next, with: {
+    use xy1 <- xy()
+    use xy2 <- xy()
+    use xy3 <- xy()
+    use xy4 <- xy()
+    decode.success(#(xy1, xy2, xy3, xy4))
+  })
+}
+
+fn margins(then next: NextFn(#(Float, Float, Float, Float), a)) -> Decoder(a) {
+  decode.token(
+    named: "margins",
+    with: {
+      use f1 <- decode.float()
+      use f2 <- decode.float()
+      use f3 <- decode.float()
+      use f4 <- decode.float()
+      decode.success(#(f1, f2, f3, f4))
+    },
     then: next,
   )
 }
 
-fn optional_angle(then next: NextFn(Option(Float), a)) -> Decoder(a) {
-  decode.optional(
-    decode.token_wrapper(named: "angle", with: decode.float, then: _),
-    then: next,
-  )
-}
-
-fn optional_corners(
-  then next: NextFn(Option(#(XY, XY, XY, XY)), a),
-) -> Decoder(a) {
-  decode.optional(
-    decode.token(named: "pts", then: _, with: {
-      use xy1 <- xy()
-      use xy2 <- xy()
-      use xy3 <- xy()
-      use xy4 <- xy()
-      decode.success(#(xy1, xy2, xy3, xy4))
-    }),
-    then: next,
-  )
-}
-
-fn optional_hide(then next: NextFn(Option(Bool), a)) -> Decoder(a) {
-  decode.optional(
-    decode.token_wrapper(named: "hide", with: yes_no, then: _),
-    then: next,
-  )
+fn hide(then next: NextFn(Bool, a)) -> Decoder(a) {
+  decode.token_wrapper(named: "hide", with: yes_no, then: next)
 }
 
 fn custom_xy(named name: String, then next: NextFn(XY, a)) -> Decoder(a) {
@@ -65,7 +65,7 @@ fn custom_xy(named name: String, then next: NextFn(XY, a)) -> Decoder(a) {
 
 fn layers(then next: NextFn(List(Layer), a)) -> Decoder(a) {
   decode.token(named: "layers", then: next, with: {
-    use layers <- decode.list(decode.string)
+    use layers <- decode.list(decode.name_or_string)
     let layers = list.map(layers, Layer)
     decode.success(layers)
   })
@@ -377,7 +377,7 @@ pub fn effects(then next: NextFn(Effects, a)) -> Decoder(a) {
   decode.token(named: "effects", then: next, with: {
     use font <- font()
     use justify <- decode.optional(justify)
-    use hide <- optional_hide()
+    use hide <- decode.optional(hide)
     decode.success(Effects(font:, justify:, hide:))
   })
 }
@@ -491,13 +491,24 @@ pub fn uuid(then next: NextFn(Uuid, a)) -> Decoder(a) {
   })
 }
 
+pub type Timestamp {
+  Timestamp(ts: String)
+}
+
+pub fn timestamp(then next: NextFn(Timestamp, a)) -> Decoder(a) {
+  decode.token(named: "tstamp", then: next, with: {
+    use ts <- decode.name_string()
+    decode.success(Timestamp(ts:))
+  })
+}
+
 pub type Layer {
   Layer(layer: String)
 }
 
 pub fn layer(then next: NextFn(Layer, a)) -> Decoder(a) {
   decode.token(named: "layer", then: next, with: {
-    use layer <- decode.string()
+    use layer <- decode.name_or_string()
     decode.success(Layer(layer:))
   })
 }
@@ -565,7 +576,7 @@ pub fn footprint_property(then next: NextFn(FootprintProperty, a)) -> Decoder(a)
       then: _,
     ))
     use layer <- layer()
-    use hide <- optional_hide()
+    use hide <- decode.optional(hide)
     use uuid <- decode.optional(uuid)
     use effects <- effects()
     decode.success(FootprintProperty(
@@ -653,6 +664,7 @@ pub type FootprintText {
     hide: Option(Bool),
     uuid: Option(Uuid),
     effects: Effects,
+    timestamp: Option(Timestamp),
   )
 }
 
@@ -667,9 +679,10 @@ pub fn footprint_text(then next: NextFn(FootprintText, a)) -> Decoder(a) {
       then: _,
     ))
     use layer <- layer()
-    use hide <- optional_hide()
+    use hide <- decode.optional(hide)
     use uuid <- decode.optional(uuid)
     use effects <- effects()
+    use timestamp <- decode.optional(timestamp)
     decode.success(FootprintText(
       type_:,
       text:,
@@ -679,6 +692,7 @@ pub fn footprint_text(then next: NextFn(FootprintText, a)) -> Decoder(a) {
       hide:,
       uuid:,
       effects:,
+      timestamp:,
     ))
   })
 }
@@ -698,6 +712,7 @@ pub type FootprintTextBox {
     border: Option(Bool),
     stroke: Option(Stroke),
     render_cache: Option(Nil),
+    timestamp: Option(Timestamp),
   )
 }
 
@@ -707,19 +722,9 @@ pub fn footprint_text_box(then next: NextFn(FootprintTextBox, a)) -> Decoder(a)
     use text <- decode.string()
     use start <- decode.optional(custom_xy("start", then: _))
     use end <- decode.optional(custom_xy("end", then: _))
-    use corners <- optional_corners()
-    use margins <- decode.optional(decode.token(
-      named: "margins",
-      with: {
-        use f1 <- decode.float()
-        use f2 <- decode.float()
-        use f3 <- decode.float()
-        use f4 <- decode.float()
-        decode.success(#(f1, f2, f3, f4))
-      },
-      then: _,
-    ))
-    use angle <- optional_angle()
+    use corners <- decode.optional(corners)
+    use margins <- decode.optional(margins)
+    use angle <- decode.optional(angle)
     use layer <- layer()
     use uuid <- decode.optional(uuid)
     use effects <- effects()
@@ -730,6 +735,7 @@ pub fn footprint_text_box(then next: NextFn(FootprintTextBox, a)) -> Decoder(a)
     ))
     use stroke <- decode.optional(stroke)
     let render_cache = option.None
+    use timestamp <- decode.optional(timestamp)
     decode.success(FootprintTextBox(
       locked:,
       text:,
@@ -744,6 +750,7 @@ pub fn footprint_text_box(then next: NextFn(FootprintTextBox, a)) -> Decoder(a)
       border:,
       stroke:,
       render_cache:,
+      timestamp:,
     ))
   })
 }
@@ -752,10 +759,12 @@ pub type FootprintLine {
   FootprintLine(
     start: XY,
     end: XY,
-    stroke: Stroke,
+    stroke: Option(Stroke),
     layer: Layer,
+    width: Option(Float),
     locked: Bool,
     uuid: Option(Uuid),
+    timestamp: Option(Timestamp),
   )
 }
 
@@ -763,11 +772,22 @@ pub fn footprint_line(then next: NextFn(FootprintLine, a)) -> Decoder(a) {
   decode.token(named: "fp_line", then: next, with: {
     use start <- custom_xy("start")
     use end <- custom_xy("end")
-    use stroke <- stroke()
+    use stroke <- decode.optional(stroke)
     use layer <- layer()
+    use width <- decode.optional(width)
     use locked <- decode.flag("locked")
     use uuid <- decode.optional(uuid)
-    decode.success(FootprintLine(start:, end:, stroke:, layer:, locked:, uuid:))
+    use timestamp <- decode.optional(timestamp)
+    decode.success(FootprintLine(
+      start:,
+      end:,
+      stroke:,
+      layer:,
+      width:,
+      locked:,
+      uuid:,
+      timestamp:,
+    ))
   })
 }
 
@@ -775,11 +795,12 @@ pub type FootprintRectangle {
   FootprintRectangle(
     start: XY,
     end: XY,
-    stroke: Stroke,
+    stroke: Option(Stroke),
     fill: Option(Bool),
     layer: Layer,
     locked: Bool,
     uuid: Option(Uuid),
+    timestamp: Option(Timestamp),
   )
 }
 
@@ -789,11 +810,12 @@ pub fn footprint_rectangle(
   decode.token(named: "fp_rect", then: next, with: {
     use start <- custom_xy("start")
     use end <- custom_xy("end")
-    use stroke <- stroke()
-    use fill <- optional_fill()
+    use stroke <- decode.optional(stroke)
+    use fill <- decode.optional(fill_flag)
     use layer <- layer()
     use locked <- decode.flag("locked")
     use uuid <- decode.optional(uuid)
+    use timestamp <- decode.optional(timestamp)
     decode.success(FootprintRectangle(
       start:,
       end:,
@@ -802,6 +824,7 @@ pub fn footprint_rectangle(
       layer:,
       locked:,
       uuid:,
+      timestamp:,
     ))
   })
 }
@@ -810,11 +833,12 @@ pub type FootprintCircle {
   FootprintCircle(
     center: XY,
     end: XY,
-    stroke: Stroke,
+    stroke: Option(Stroke),
     fill: Option(Bool),
     layer: Layer,
     locked: Bool,
     uuid: Option(Uuid),
+    timestamp: Option(Timestamp),
   )
 }
 
@@ -822,11 +846,12 @@ pub fn footprint_circle(then next: NextFn(FootprintCircle, a)) -> Decoder(a) {
   decode.token(named: "fp_circle", then: next, with: {
     use center <- custom_xy("center")
     use end <- custom_xy("end")
-    use stroke <- stroke()
-    use fill <- optional_fill()
+    use stroke <- decode.optional(stroke)
+    use fill <- decode.optional(fill_flag)
     use layer <- layer()
     use locked <- decode.flag("locked")
     use uuid <- decode.optional(uuid)
+    use timestamp <- decode.optional(timestamp)
     decode.success(FootprintCircle(
       center:,
       end:,
@@ -835,6 +860,7 @@ pub fn footprint_circle(then next: NextFn(FootprintCircle, a)) -> Decoder(a) {
       layer:,
       locked:,
       uuid:,
+      timestamp:,
     ))
   })
 }
@@ -844,10 +870,11 @@ pub type FootprintArc {
     start: XY,
     mid: XY,
     end: XY,
-    stroke: Stroke,
+    stroke: Option(Stroke),
     layer: Layer,
     locked: Bool,
     uuid: Option(Uuid),
+    timestamp: Option(Timestamp),
   )
 }
 
@@ -856,10 +883,11 @@ pub fn footprint_arc(then next: NextFn(FootprintArc, a)) -> Decoder(a) {
     use start <- custom_xy("start")
     use mid <- custom_xy("mid")
     use end <- custom_xy("end")
-    use stroke <- stroke()
+    use stroke <- decode.optional(stroke)
     use layer <- layer()
     use locked <- decode.flag("locked")
     use uuid <- decode.optional(uuid)
+    use timestamp <- decode.optional(timestamp)
     decode.success(FootprintArc(
       start:,
       mid:,
@@ -868,6 +896,7 @@ pub fn footprint_arc(then next: NextFn(FootprintArc, a)) -> Decoder(a) {
       layer:,
       locked:,
       uuid:,
+      timestamp:,
     ))
   })
 }
@@ -875,22 +904,24 @@ pub fn footprint_arc(then next: NextFn(FootprintArc, a)) -> Decoder(a) {
 pub type FootprintPolygon {
   FootprintPolygon(
     points: PolyPoints,
-    stroke: Stroke,
+    stroke: Option(Stroke),
     fill: Option(Bool),
     layer: Layer,
     locked: Bool,
     uuid: Option(Uuid),
+    timestamp: Option(Timestamp),
   )
 }
 
 pub fn footprint_polygon(then next: NextFn(FootprintPolygon, a)) -> Decoder(a) {
   decode.token(named: "fp_poly", then: next, with: {
     use points <- poly_points()
-    use stroke <- stroke()
-    use fill <- optional_fill()
+    use stroke <- decode.optional(stroke)
+    use fill <- decode.optional(fill_flag)
     use layer <- layer()
     use locked <- decode.flag("locked")
     use uuid <- decode.optional(uuid)
+    use timestamp <- decode.optional(timestamp)
     decode.success(FootprintPolygon(
       points:,
       stroke:,
@@ -898,6 +929,7 @@ pub fn footprint_polygon(then next: NextFn(FootprintPolygon, a)) -> Decoder(a) {
       layer:,
       locked:,
       uuid:,
+      timestamp:,
     ))
   })
 }
@@ -905,21 +937,30 @@ pub fn footprint_polygon(then next: NextFn(FootprintPolygon, a)) -> Decoder(a) {
 pub type FootprintCurve {
   FootprintCurve(
     points: Points,
-    stroke: Stroke,
+    stroke: Option(Stroke),
     layer: Layer,
     locked: Bool,
     uuid: Option(Uuid),
+    timestamp: Option(Timestamp),
   )
 }
 
 pub fn footprint_curve(then next: NextFn(FootprintCurve, a)) -> Decoder(a) {
   decode.token(named: "fp_curve", then: next, with: {
     use points <- points()
-    use stroke <- stroke()
+    use stroke <- decode.optional(stroke)
     use layer <- layer()
     use locked <- decode.flag("locked")
     use uuid <- decode.optional(uuid)
-    decode.success(FootprintCurve(points:, stroke:, layer:, locked:, uuid:))
+    use timestamp <- decode.optional(timestamp)
+    decode.success(FootprintCurve(
+      points:,
+      stroke:,
+      layer:,
+      locked:,
+      uuid:,
+      timestamp:,
+    ))
   })
 }
 
@@ -1287,8 +1328,8 @@ pub fn graphical_text_box(then next: NextFn(GraphicalTextBox, a)) -> Decoder(a)
     use text <- decode.string()
     use start <- decode.optional(custom_xy("start", then: _))
     use end <- decode.optional(custom_xy("end", then: _))
-    use corners <- optional_corners()
-    use angle <- optional_angle()
+    use corners <- decode.optional(corners)
+    use angle <- decode.optional(angle)
     use layer <- decode.optional(layer)
     use uuid <- decode.optional(uuid)
     use effects <- effects()
@@ -1325,7 +1366,7 @@ pub fn graphical_line(then next: NextFn(GraphicalLine, a)) -> Decoder(a) {
   decode.token(named: "gr_line", then: next, with: {
     use start <- custom_xy("start")
     use end <- custom_xy("end")
-    use angle <- optional_angle()
+    use angle <- decode.optional(angle)
     use layer <- decode.optional(layer)
     use width <- width()
     use uuid <- decode.optional(uuid)
@@ -1352,7 +1393,7 @@ pub fn graphical_rectangle(
     use end <- custom_xy("end")
     use layer <- decode.optional(layer)
     use width <- width()
-    use fill <- optional_fill()
+    use fill <- decode.optional(fill_flag)
     use uuid <- decode.optional(uuid)
     decode.success(GraphicalRectangle(
       start:,
@@ -1382,7 +1423,7 @@ pub fn graphical_circle(then next: NextFn(GraphicalCircle, a)) -> Decoder(a) {
     use end <- custom_xy("end")
     use layer <- decode.optional(layer)
     use width <- width()
-    use fill <- optional_fill()
+    use fill <- decode.optional(fill_flag)
     use uuid <- decode.optional(uuid)
     decode.success(GraphicalCircle(center:, end:, layer:, width:, fill:, uuid:))
   })
@@ -1426,7 +1467,7 @@ pub fn graphical_polygon(then next: NextFn(GraphicalPolygon, a)) -> Decoder(a) {
     use points <- poly_points()
     use layer <- decode.optional(layer)
     use width <- width()
-    use fill <- optional_fill()
+    use fill <- decode.optional(fill_flag)
     use uuid <- decode.optional(uuid)
     decode.success(GraphicalPolygon(points:, layer:, width:, fill:, uuid:))
   })
@@ -1526,17 +1567,7 @@ pub fn symbol_text_box(then next: NextFn(SymbolTextBox, a)) -> Decoder(a) {
     use text <- decode.string()
     use position <- position_identifier()
     use size <- size()
-    use margins <- decode.optional(decode.token(
-      named: "margins",
-      with: {
-        use f1 <- decode.float()
-        use f2 <- decode.float()
-        use f3 <- decode.float()
-        use f4 <- decode.float()
-        decode.success(#(f1, f2, f3, f4))
-      },
-      then: _,
-    ))
+    use margins <- decode.optional(margins)
     use stroke <- stroke()
     use fill <- fill()
     use effects <- effects()
@@ -1753,7 +1784,7 @@ pub fn symbol_pin(then next: NextFn(SymbolPin, a)) -> Decoder(a) {
     use hide <-
       case hide_flag {
         True -> decode.of(with: decode.success(option.Some(True)), then: _)
-        False -> optional_hide(then: _)
+        False -> decode.optional(hide, then: _)
       }
     use name <- pin_name()
     use number <- pin_number()
@@ -1974,7 +2005,7 @@ pub fn custom_pad_primitives(
   decode.token(named: "primitives", then: next, with: {
     use graphic_items <- decode.list(graphic_item)
     use width <- decode.optional(width)
-    use fill <- optional_fill()
+    use fill <- decode.optional(fill_flag)
     decode.success(CustomPadPrimitives(graphic_items:, width:, fill:))
   })
 }
@@ -2012,6 +2043,7 @@ pub type Pad {
     custom_options: Option(CustomPadOptions),
     custom_primitives: Option(CustomPadPrimitives),
     uuid: Option(Uuid),
+    timestamp: Option(Timestamp),
   )
 }
 
@@ -2120,6 +2152,7 @@ pub fn pad(then next: NextFn(Pad, a)) -> Decoder(a) {
     use custom_options <- decode.optional(custom_pad_options)
     use custom_primitives <- decode.optional(custom_pad_primitives)
     use uuid <- decode.optional(uuid)
+    use timestamp <- decode.optional(timestamp)
     decode.success(Pad(
       number:,
       type_:,
@@ -2152,6 +2185,7 @@ pub fn pad(then next: NextFn(Pad, a)) -> Decoder(a) {
       custom_options:,
       custom_primitives:,
       uuid:,
+      timestamp:,
     ))
   })
 }
@@ -2550,7 +2584,7 @@ pub type FootprintModel {
 pub fn footprint_model(then next: NextFn(FootprintModel, a)) -> Decoder(a) {
   decode.token(named: "model", then: next, with: {
     use file <- decode.string()
-    use hide <- optional_hide()
+    use hide <- decode.optional(hide)
     use offset <- decode.token_wrapper(named: "offset", with: xyz)
     use scale <- decode.token_wrapper(named: "scale", with: xyz)
     use rotate <- decode.token_wrapper(named: "rotate", with: xyz)
@@ -2843,7 +2877,7 @@ fn base_symbol(then next: NextFn(Symbol, a)) -> Decoder(a) {
     let power = option.is_some(power)
     use hide_pin_numbers <- decode.optional(decode.token_wrapper(
       named: "pin_numbers",
-      with: optional_hide,
+      with: decode.optional(hide, then: _),
       then: _,
     ))
     let hide_pin_numbers = option.flatten(hide_pin_numbers)
@@ -2855,7 +2889,7 @@ fn base_symbol(then next: NextFn(Symbol, a)) -> Decoder(a) {
           with: decode.float,
           then: _,
         ))
-        use hide <- optional_hide()
+        use hide <- decode.optional(hide)
         decode.success(#(offset, hide))
       },
       then: _,
diff --git a/test/kicad_sexpr_test.gleam b/test/kicad_sexpr_test.gleam
index fb34cdf..6bbe26a 100644
--- a/test/kicad_sexpr_test.gleam
+++ b/test/kicad_sexpr_test.gleam
@@ -2,7 +2,8 @@ import gleam/float
 import gleam/int
 import gleam/io
 import gleam/list
-import gleam/pair
+
+// import gleam/pair
 import gleam/result
 import gleam/string
 import gleam/time/duration
@@ -14,7 +15,6 @@ import kicad_sexpr/token
 import simplifile
 
 pub fn main() -> Nil {
-  // let file_names = list.sample(file_names, 1000)
   io.println("\nTesting Footprints")
   let assert Ok(footprint_files) =
     simplifile.get_files("/usr/share/kicad/footprints")
@@ -23,16 +23,16 @@ pub fn main() -> Nil {
   //   token.footprint_file,
   //   True,
   // )
-  test_read_parse_decode(
-    ["test_files/test3.kicad_mod"],
-    token.footprint_file,
-    True,
-  )
-  // test_read_parse_decode(footprint_files, token.footprint_file, False)
-  // io.println("\nTesting Symbol Libraries")
-  // let assert Ok(symbol_libraries) =
-  //   simplifile.get_files("/usr/share/kicad/symbols")
-  // test_read_parse_decode(symbol_libraries, token.symbol_library, False)
+  // test_read_parse_decode(
+  //   ["test_files/test3.kicad_mod"],
+  //   token.footprint_file,
+  //   True,
+  // )
+  test_read_parse_decode(footprint_files, token.footprint_file, False)
+  io.println("\nTesting Symbol Libraries")
+  let assert Ok(symbol_libraries) =
+    simplifile.get_files("/usr/share/kicad/symbols")
+  test_read_parse_decode(symbol_libraries, token.symbol_library, False)
   gleeunit.main()
 }