Wait until permission is granted to control a junction in a specified switch/lever direction and a track piece extending from one end of the junction. Permits are not granted until both the junction and the track piece are cleared, and they will be released automatically once the entire train passes from the junction to enter the track piece. This command is handy if you want to control a path defined between a few junctions. If the path contains more than a few junctions (e.g, more than 5), use mutton's path rule/command to define the entire path in a single command.
The command's menu contains six options to control the selected junction with a track extension. These are 'LEFT-LEFT', 'RIGHT-RIGHT', 'FORWARD-FORWARD', 'LEFT-BACKWARD', 'RIGHT-BACKWARD', and 'FORWARD-BACKWARD', where the item on the left of '-' denotes the direction to switch and control the junction and the item on the right of '-' character denotes the junction end from which the track piece extends. Note that while LEFT,RIGHT, and FORWARD represent the branch ends of the junction, BACKWARD denotes the root end of the junction. You may want to experiment these options to understand completely.