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Browsers and dialogs

NullPerator uses full-screen browsers for projects, samples, instruments, and themes. Choosing a project loads the song; choosing a sample or instrument imports it into the current project.

Shortcuts​

Browsers

Move between filesTap Up or Down
Choose a bottom actionTap Left or Right
Open or activateTap Enter
Return to the owner pageHold Shift, then press Left

Rename and dialogs

Move the keyboard cursorTap a direction
Activate a key or choiceTap Enter
Toggle letter caseTap Shift on the rename keyboard
Choose a dialog actionTap Left or Right, then Enter

Browser conventions​

  • Up/Down moves the row cursor.
  • Left/Right moves through actions in the bottom bar.
  • Enter activates the selected row or action.
  • .. enters the parent directory. It does not close the browser.
  • Shift + Left returns to the page that opened the browser.

Sample and Project browsers add their own preview, import, and delete actions. Deleting something always asks for confirmation first.

Rename keyboard​

Rename opens a dedicated screen rather than floating above the previous page. The title sits at the top, the input field below it, and the keyboard fills the lower area.

  • Directions move between keys.
  • Enter activates the focused key.
  • Shift toggles letter case; the letters on the keyboard update immediately.
  • The icon keys provide case, space, and backspace.
  • The bottom actions are Cancel / Random / Save.

Save is dimmed and disabled while the name is empty. If the name already exists or saving fails, the screen stays open and tells you what happened.

Confirmations and feedback​

In a confirmation, move to the action you want and press Enter.

Brief results such as Copied, Pasted, or Locked appear in the bottom bar. Errors that need your attention open a message in the middle of the screen. Rendering shows its progress and can be cancelled.