SPECPR Users’ Manual Page 8-f4.1 F4: Sequential Processor (No User Access) Alias: none This function sets up the commands from function f3 for execution and thus has no user access. The f4 function makes a command to do an operation followed by a comma and f4. Thus f4 calls itself. Internally, it stores the sequential command and counters in an internal array and increments them each time the program returns to the f4 function. For example, f4 may build a command sequence like v23/w26e,f4 so that the first operation (v23/w26e) is done and then f4 is called again. The f4 routine then increments whatever the user had requested and generates a new command and returns to the command interpreter. When all incrementing is complete, f4 returns to the user command input routine.