This call may be used to modify the state of menu flag which controls the dotted line displayed below the menu item.
* R0 = handle of menu item or 0 for current menu item or handle of menu
R1 — defines action
if R1 = 0 then clear dots flag
if R1 ¹ 0 then set dots flag
* R0,R1 preserved
Use: R0 must contain the item handle or zero for the current menu item. R1 defines to set or to clear the flag. If R1 is zero then the flag will be cleared and if R1 is non zero then the flag will be set.
If R0 instead of item handle contains menu handle then the state of the flag will be changed in all items of this menu.
It is convenient to pass in R1 the result of logical expression (to set flag if result is TRUE and to clear it if FALSE).
Example code...
Example code (MenuUtil_Dots)
Display dotted line after the current menu item
SYS "MenuUtil_Dots",,TRUE
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