Welcome to the Giff scripting language for GoOS (v0.35). Giff is a tiny, UI scripting language that builds GoOS windows and controls, wires events, and performs simple logic, file I/O, and HTTP (plain http://) fetches.

• Designed for British English spellings (e.g., colour), but property keys are case-insensitive.
• Version: 0.35

• Declare windows, panels, and controls (label, button, input, image placeholder, listbox).
• Handle events: onLoad, onClose, onClick, onChange, onSelect.
• Use commands: message, close, set, concat, length, substr, if { } else { }.
• File/Directory: fileWrite, fileAppend, fileRead, fileDelete, fileCopy, fileExists, dirCreate, dirDelete, dirExists.
• Persistence: varsSave, varsLoad, varClear, varsClearAll.
• Networking: netGet (download file), netGetText (download text; HTTP only).

window Hello {
  title "Greetings"
  width 320; height 180; background "#F0F0F0"

  label title {
    x 10; y 10; text "Welcome to Giff"
    textColour black
  }

  input nameBox {
    x 10; y 40; width 200; placeholder "Type your name"
    onChange {
      set name = "$input_nameBox_text";
    }
  }

  button sayHi {
    x 10; y 80; width 80; text "Say Hi"
    onClick {
      message "Hello, $name!";
    }
  }

  onLoad {
    message "Window loaded.";
  }
}

• Language Specification — tokens, properties, values.
• Windows & Layout — sizes, positions, colours, centring.
• Controls — label, button, input, image, listbox.
• Panels — grouping & relative layout.
• Events & Commands — full catalogue with examples.
• Variables & Expressions — $var substitution and conditions.
• File & Directory I/O — read/write/copy, existence checks.
• Networking — HTTP GET, DNS limits, status variables.
• Persistence & State — saving/loading variables to disk.
• Examples — complete, runnable scripts.
• Troubleshooting — common mistakes, runtime notes.