Valid/Invalid Execution Conditions
The following are examples of valid and invalid true/false execution conditions as specified in the first five positions of a statement. The next level referred to below identifies the internal true/false status indicator to be set assuming the statement affects these indicators (as identified in Table 4-2-1).
Valid T/F Execution Conditions
? ? ? ? ? ....... No execution conditions apply; next level is level 1. T ? ? ? ? ...... One condition applies; next level is level 2. T T F T ? .... Four conditions apply, next level is level 5. F F F T T .... Five conditions apply, next level is invalid.*
* Note: Five conditions are not valid on a statement affecting the internal T/F status indicators (except for GOSUB and RETURN).
Invalid T/F Execution Conditions
? T ? ? ? ..... A non-blank execution condition cannot follow a blank. T F ? ? T .... A non-blank execution condition cannot follow a blank. |