| kill | Close DeskCalc | Tells a running DeskCalc to shut down. |
| /min | Start minimized | Starts DeskCalc minimized, out of the way. |
| /new | New tape | Opens DeskCalc and starts a fresh tape. |
| /scan | Click & Calc | Brings DeskCalc to the front and starts a screen scan (Click & Calc). |
| /postit | PostIt tape | Copies the current tape to the clipboard as a PostIt, without stealing focus. |
| /email | E-mail action | Runs the configured e-mail action for the tape. |
| /browser | Browser action | Runs the configured web-browser action. |
| /media | Media action | Runs the configured media action. |
| /prg1 | Program slot 1 | Runs the first user-defined program / action. |
| /prg2 | Program slot 2 | Runs the second user-defined program / action. |
| /show | Bring to front | Brings a running DeskCalc to the foreground (or starts it if none is running). |
| /resultfile <file> | Result to file | Writes the current tape result to the given text file — a simple way for a script or another program to read a result back. Pass it together with a tape to a running DeskCalc, e.g. deskcalc.exe order.dsk /resultfile out.txt. |
| /save [file] | Save tape | Saves the current tape. With a file name it saves there, otherwise in place — e.g. deskcalc.exe order.dsk /save copy.dsk. |
| /excel | Export to Excel | Exports the current tape to Excel and opens it (Excel must be installed). |
| /print | Print tape | Prints the current tape silently to the default printer. |
| <file>.dsk | Open a tape file | Opens the given .dsk tape document in DeskCalc. |