Declared constructor option without local implementation.

The header declares initialize-only BOOL. No local default, state,

setter or getter is implemented.

The constructor forwards the tag to Register but does not inspect it. It

does not alter the available pages or enable a system-pen editor. Do not

infer behavior from the attribute name.

Register.mui

Edit a pen using three register pages: eight MUI pen names, a color-map

slider from -128 to 127, and Coloradjust. The default specification is

m5. Child controls are owned through the register/group hierarchy;

internal specifications are embedded copies. Construction returns NULL

if superclass construction fails.

The private Spec interface copies a complete MUI_PenSpec and maps m, p

or r forms to the corresponding page. Public PSIMode is declared but has

no implementation.

Setting the private specification updates controls through ordinary

setters. Reading it samples the active page and formats a new internal

specification; Get therefore changes stored bytes and returns a borrowed

pointer. There is no local notification wiring that automatically

publishes a new Spec after every user edit.

MUI entries select indices zero through seven. The color-map page uses

Numeric's -128..127 limits. Coloradjust supplies full component values

subject to its interaction quantization. There is no system-pen page:

parsing s forms leaves the page unchanged, and the next Get replaces

that specification from the currently active page.

Only valid terminated specifications in full 32-byte structures may be

passed to the private interface; NULL is dereferenced and

parser/converter results are ignored. Invalid forms have no dependable

editor behavior. System pens are not preserved through a normal Get. The

display hook uses a shared static text buffer; its icon text must be

consumed synchronously. Preserve the built-in child structure while

using this class.