This command collapses the selected multiline C statement into one line. It can be applied to if, while, for, switch, do keywords. The collapsed item will be replaced by its keyword and "..."
It can also be applied to the local variable declarations. This can be useful if there are too many variables and they make the output too long. All variable declarations will be replaced by just one line:
// [COLLAPSED LOCAL DECLARATIONS. PRESS KEYPAD CTRL-"+" TO EXPAND]
See also: interactive operation