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Text can be loaded from a file or from another variable, and can be saved to either a file or a variable.
Source Data
Source text can be loaded from a variable or from a file on disk.
Variable Replacement
"Fail if any variables do not exist"
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Enable this option in order to echo the replaced text to the action's log output.
Destination Output
If "Write back to source" is selected, the source text (file or variable) will be overwritten with the new text.
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