Advantech AWS-825B Manual page 48

For example:
ALT-F1 is represented by [26][44][90]
CRTL-C is represented by [28]C[90]
SHIFT-B is represented by [27]B[90]
ALT-X is represented by [26]X[90] or [26]x[90]
ALT-F1 is represented by [26][44][90]
SHIFT-X is represented by [27]X[90]
SHIFT-F1 is represented by [27][44][90]
CTRL-X is represented by [28]X[90]
CTRL-F is represented by [28][44][90]
CTRL-ALT-DEL is represented by [28][26][41][90] (reboot)
CTRL-ALT-A is represented by [28][26]A[90]
CTRL-SHIFT-1 is represented by [28][27]1[90]
Another useful function is the DELAY instruction. You can
instruct the macro program to wait before executing the next
keystroke. SFED825.COM displays the codes that you can use for
various delays.
For example:
[86] - wait for 10 seconds before executing next keystroke
[88] - wait for 1 minute before executing next keystroke
[26]A[90][86][26]B[90] means ALT-A, wait 10 seconds, ALT-B
38 AWS-825B/PB User's Manual