2.4.0

1. Fixed ASPECT and ASPECTD /C argument and 40x25 text modes.
2. Added FIR-91/sharp filtering mode to ASPECT and ASPECTD ( /AS and /S commad line arguments).

2.3.0

In order to be in feature parity with the Windows drivers ASPECT and ASPECTD are now capable to produce pixel perfect centered images.
Two new parameters have been added:
/C -> display pixel perfect centered image
/A -> display aspect ratio corrected image (this is the working mode of the previous versions).

These are also run-time arguments so the display mode can be changed while the TSR is running. Without parameters it starts in aspect ratio corrected mode the same way as the previous versions.

2.2.0

Added BLCSETD and new version of ASPECT.

2.1.0

Added ASPECTD a DPMI-compatible aspect-ratio correction tool for EMM386/JEMM386 environments.

2.0.0

1. Added TSR utility for aspect ratio correction. (ASPECT.COM)
2. Added more detailed documentation.

1.0.0

Initial release.
BLCSET can be used from real mode to set the LCD brightness on a ThinkPad T430.
BLCINIT can be used from CONFIG.SYS so that it can be used before EMM386 or similar expanded memory manager is loaded:

DEVICE=C:\DOS\HIMEM.SYS
DEVICE=C:\DOS\BLCINIT.SYS 01E7
DEVICE=C:\DOS\EMM386.EXE RAM

In both cases the only accepted/required parameter is the LCD brightness level in hexadecimal form.
On my T430 the levels are the following:

BLCSET 0045 - minimum level
BLCSET 01E7 - medium level
BLCSET 1155 - maximum level