HomeDevText & encodingEditor Help
Text tools

Editor Help

Keyboard shortcuts and usage notes for the CalculatorX online text editor. File operations, editing commands, zoom, auto-save, and troubleshooting.

Text editor help specification

Version 1.0.0 · Last reviewed 2026-07-28

Definition
Help and keyboard-shortcut reference for the CalculatorX online text editor: file operations, editing commands, zoom, auto-save behavior, and troubleshooting.
What it calculates
Documents the editor’s file, edit, zoom, and auto-save behaviors and the keyboard shortcuts that trigger them.
Inputs
  • User actions: New, Open, Save, Save As, Print
  • Edit actions: Cut, Copy, Paste, Delete, Select all, Undo, Redo
  • Zoom in / out
Outputs
  • Shortcut → action mapping (Windows/Linux Ctrl; Mac ⌘)
  • Auto-save and storage notes
  • Troubleshooting guidance
Formula
shortcut → editor command; auto-save → localStorage on blur/unload

Reference for the Text Editor Online — keyboard shortcuts, menu operations, and auto-save behavior.

Keyboard shortcuts

Operation Shortcut Description
New — Clear the text area
Open Ctrl+O Open a text file from disk
Save Ctrl+S Save text to the current file on disk
Save As — Save text to a new file on disk
Print Ctrl+P Print the current text
Cut Ctrl+X Copy and delete selected text
Copy Ctrl+C Copy selected text
Paste Ctrl+V Paste cut or copied text
Delete Delete Delete selected text
Select all Ctrl+A Select all text
Undo Ctrl+Z Undo the last edit
Redo Ctrl+Y Redo the last undone edit
Zoom out — Decrease font size
Zoom in — Increase font size

On Mac, use ⌘ Command instead of Ctrl for most shortcuts.

Auto-save and storage

  • Text is auto-saved when you close the page or switch to another browser tab
  • Auto-save uses browser local storage on your device
  • Private/incognito mode does not persist saved text reliably
  • Clearing browsing history may delete saved editor text
  • If a previous session is missing, try adding or removing www from the URL

File operations

  • Open reads .txt and other plain text files from your computer
  • Save downloads the file — check your Downloads folder for saved files
  • The editor does not upload files to a server; everything stays local
Assumptions
  • Shortcuts match the companion Text Editor Online tool on this site.
  • On Mac, ⌘ Command replaces Ctrl for most shortcuts.
  • Num/focus: click inside the editor so key events reach the text field.
Units
  • N/A (reference documentation)
Boundary conditions
  • Private/incognito mode does not persist auto-saved text reliably.
  • Clearing browsing history may delete saved editor text.
  • Save As is menu-driven; Ctrl+S saves when a filename is set.
Example
Ctrl+S → save/download current text; Ctrl+Z → undo last edit
Validation cases
  • Ctrl+O → Open local text file
  • Ctrl+S → Save / download current text
  • Ctrl+Z then Ctrl+Y → Undo then redo
  • Close tab after typing → Draft auto-saved to localStorage (normal browsing)
Sources
  • CalculatorX Text Editor Online tool behavior
  • Browser localStorage persistence model
Last reviewed
2026-07-28
Calculation version
1.0.0
→ Text Editor Online › → ASCII Table ›

Frequently asked questions

Key distinctions behind the tool.

Where do opened files come from?

You select them from your local disk via the Open dialog. The editor reads them in the browser only.

Why is Save As not using Ctrl+Shift+S?

Use the File menu for Save As. Ctrl+S saves to the current filename when one is set.

Can I recover unsaved text after a crash?

If auto-save was active (normal browsing mode), reload the editor page — saved text may restore from local storage.

Do shortcuts work when the editor iframe is focused?

Yes. Click inside the editor area first so keyboard focus is on the text field.

How do I print without headers and footers?

Use your browser's print dialog and disable headers/footers in print settings for a clean output.