# External Subroutine List

> [HTML Version](external-subroutine-list.htm)

As described elsewhere, A-Shell includes two types of subroutines:

•	Those that are "internal" to A-Shell—i.e., are part of the main A-Shell program. They do not exist as discrete programs, are written in C, are linked in to the main A-Shell executable program, and are cannot be modified by users.

•	The "external" routines are not part of "core A-Shell," exist as separate files and programs, were written in ASB, and can modified if needed. A set of these external routines is provided with A-Shell, and you can see the run files with the extension SBX in DSK0:\[7,6\]. Source code for the routines may be found in the A-Shell SOSLIB.

The following table alphabetically lists A-Shell’s external subroutines, most of which have links to more detailed information.

| **Routine** | **Function** |
|------|------|
| [APRNTSCRN](aprntscrn_sbx.md) | Screen Capture. |
| APXTEDIT | Documentation pending. |
| [ASEXIT](asexitsbr.md) | A hook routine that will be called automatically just before A-Shell exits. |
| [ATEAPX](ateapx_sbx.md) | Transfers a file from application server to ATE client PC. |
| ATECFX | ATE configuration dialog. See [ATE Reference](https://www.microsabio.net/dist/doc/ate/00ate.html). |
| [ATEGFK](ategfk_sbx.md) | Retrieves a file from the PC via the ATE terminal connection.  |
| ATEPRT | Documentation pending. |
| [ATEREG](atereg_sbr.md) | Query and/or update ATE configuration. |
| ATHTTP | A variant of [HTTP](http_sbr.md), which see for details. |
| ATPXFR | Documentation pending. |
| ATSYNC | Documentation pending. |
| AUXEXC | Documentation pending. |
| [CSV2XL](csv2xl.md) | Converts CSV files to XLS format. |
| [EMAILP](emailp_sbx.md) | Email a report. |
| EVTMSG | Documentation pending. |
| [FNDUSR](fndusr_sbx.md) | Retrieves information about the current (or another) user from the database.  |
| [INIX](inix_sbx.md) | Read and write to ini files. Thanks Steve Evans\! |
| [ISMBLD](ismbld_sbx.md) | Create ISAM 1.0 file. |
| [ISMPAR](ismpar_sbx.md) | Return information from the ISAM "rock" about filespec. |
| PDFLPR | Documentation pending. |
| PRTMAPI | Documentation pending. |
| [PRTXLS](export_to_xls.md) | Exports reports from APEX (A-Shell's enhanced screen display) to XLS file. |
| PXLCFG | Documentation pending. |
| [SBXINP](sbxinp_sbr.md) | INFLD wrapper that simplifies some INFLD operations. Thanks Jorge Tavares\! |
| [SCRSTS](scrsts_sbr.md) | Scrolling status window handler. |
| [XSHLEX](xshlex_sbr.md) | Platform-independent "Shell Execute." |