• Identifiers: A–Z a–z 0–9 _ . (dot allowed). Case-insensitive when used as property keys.
• Numbers: decimal integers, may be negative (e.g., -12, 640).
• Strings: single or double quotes. Supports escapes: \n \r \t \\ \" \'.
• Punctuation: { } = : ; , ( ) + - * / % $.
• Comments: // to end of line.
• Hash words: #word (reserved for potential future directives; currently parsed as values where accepted).

Top level accepts multiple window blocks:

window MyWin { ... }
window Another { ... }

Inside a window or panel block you may place controls, events, and properties:

• Controls: label, input, button, image, listbox, panel.
• Events: onLoad { ... }, onClose { ... } (window only), onClick, onChange, onSelect.
• Properties: key = value or key : value or key value. End with optional ;.

A value may be:

• String: "text" or 'text'
• Number: 320
• Identifier: true, false, white, center (treated as text tokens)
• Hash word: #something

The parser writes properties into a dictionary of strings, then specific parsers convert to int, bool, or colour.

Accepted truthy/falsey strings for boolean properties:

• true, 1 → true
• false, 0 → false (Comparison is case-insensitive.)

background / backgroundColour / textColour accept:

• Named: white, black, lightgray|lightgrey, gray|grey, transparent.
• Hex: #RRGGBB or RRGGBB.

For labels you may centre horizontally via any of: centre, centrex, center, centerx (case-insensitive) → true|false.