Basics

Opening a file

On the Files page, tap a file name → choose Open.

Read-only by default

Files open in read-only mode (the status bar says "Read-only") — this stops a stray tap from wrecking your code.

To edit, tap 🔒 in the toolbar at the top right (or use ✎ Toggle edit/read-only in the ☰ menu). Tap it again to go back to read-only.

Saving

💾 in the toolbar, or Save in the ☰ menu. Saving is atomic (a temp file is written first, then swapped in), so losing power halfway never leaves you with half a file.

One exception: assembly and bytecode files such as .vml / .vmb always open read-only. They are build artifacts; to change them, change the source.

Font size and gestures

• Pinch with two fingers: scale the font size
• Scaling is continuous (it does not jump in fixed steps)
• To go back to the default size: ☰ menu → ↩ Reset font

Fullscreen

Tap ⛶ in the top right to go fullscreen (other UI is hidden); tap again to leave.

Horizontal scrolling

Long lines do not wrap. Swipe from left to right to see the rest (there is a horizontal scrollbar at the bottom). The line-number gutter stays pinned to the left and does not scroll with the text.