This function selects a text file "workarea" from 1 to 10. A file may or may not be open in the selected area.
Passing 0 for <nNewArea> selects the next available workarea, similar to Clipper's SELECT 0 command. If no more workareas are available the current workarea is not changed.
Each file is opened in its own "workarea", similar to the concept used by dbf files. As provided, a maximum of 10 files (in 10 workareas) can be opened (assuming there are sufficient file handles available). That number may be increased by modifying the #define TEXT_WORKAREAS in the C source code and recompiling.
All the FT_F*() file functions operate on the file in the currently selected text file workarea.
Text file workareas are separate from and independent of Clipper's database workareas.