Chapter 4-2: True/False Status Indicators
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. |