What does M do?
In Photoshop, M means: Activate the Rectangular Marquee selection tool.
Last verified: Not yet independently verified
Where this shortcut applies
| App | Platform | What it does |
|---|---|---|
| Photoshop | Platform not independently verified | Activate the Rectangular Marquee selection tool Verification pending |
| Slack | Platform not independently verified | Toggle your microphone mute during a Slack call or huddle Verification pending |
| YouTube | Platform not independently verified | Toggle audio mute on and off Verification pending |
| Adobe Illustrator | Platform not independently verified | Draw rectangles and squares Verification pending |
| Blender | Platform not independently verified | Open Merge menu to merge vertices Verification pending |
| DaVinci Resolve | Platform not independently verified | Add a marker at the current playhead position Verification pending |
| Adobe Lightroom | Platform not independently verified | Activate the graduated filter Verification pending |
| Trello | Platform not independently verified | Open the member picker to assign someone to the card Verification pending |
| Jira | Platform not independently verified | Open the comment field for the selected issue Verification pending |
Full shortcut pages
Frequently asked questions
- What does M do?
- In Photoshop, M means: Activate the Rectangular Marquee selection tool.
- Does this shortcut work the same way in every app?
- No. The listed contexts include Photoshop, Slack, YouTube, Adobe Illustrator, Blender, DaVinci Resolve, Adobe Lightroom, Trello, Jira. Check the table for each application and platform: the active window, keyboard layout and application settings determine which command receives the key press. An application being available on an operating system is not evidence that this exact binding works there.
- What should I use on a Mac?
- Use a macOS binding shown in the table, if one is recorded for your task and application. This page does not assume that replacing Ctrl with Cmd produces a working Mac shortcut. When an equivalent has not been independently verified, open the linked application reference and check its documented context before relying on it.