define method
Implementation
int define( String? label ){
if( label != null ){
for( int i = 255; i >= 0; i-- ){
if( _flag[i] == ClipGlobal.labelUnused ){
_flag[i] = ClipGlobal.labelMovable;
setLabel( i, label, false );
return i;
}
}
}
return -1;
}