Output from the Command Scan Service Routine

The Command Scan Service Routine scans the command buffer and returns the results of its scan to the calling routine by filling in the command scan output area, and by updating the offset field in the command buffer. Table 1 shows the possible CSOA settings and command buffer offset settings upon return from the Command Scan Service Routine.

Table 1. Return from command scan - CSOA and command buffer settings
Command scan output area			Command buffer
Flag	Meaning	Length field	Offset set to:
X'80'	The command name is valid and the remainder of the buffer contains non-separator characters.	Length of command name	The first non-separator following the command name.
X'40'	The command name is valid and there are no non-separator characters remaining.	Length of command name	The end of the buffer.
X'20'	The command name is a question mark.	Zero	Unchanged.
X'10'	The buffer is empty or contains only separators.	Zero	The end of the buffer.
X'08'	The command name is syntactically not correct.	Zero	Unchanged.
X'04'	The command is an implicit EXEC command.	Length of command name	The first non-separator following the command name.