This attribute references the code page of the strings in the text segment. The code page value is written to the r-code file when the file is saved. ABL uses the code page specified by the R-code Out Code Page (-cprcodeout) startup parameter to write the r-code text segment. If -cprcodeout is not specified, ABL uses the value of the Internal Code Page (CPINTERNAL) SESSION handle.
For a file that is session compiled, the return value is the Unknown value (?).