Sheets & files

A sheet is a named notebook. Numlex keeps them for you locally and lets you move them in and out as files.

Sheets and folders

Work in named sheets with line numbers, syntax tinting and a live results column. Sheets are grouped by the one-level folder tabs pinned to the bottom of the sidebar: the built-in General tab plus any custom folders you create.

• Selecting a tab filters the sheet list only — your editor and cursor never jump.
• Drag a sheet onto a folder tab to re-file it.
• Folders are one level deep — there are no nested folders.

Where sheets are stored

Sheets persist locally on your Mac as a single JSON store in ~/Library/Application Support/Numlex. Nothing is synced to a server; the only network traffic is the background currency-rate refresh and the weather in … lookups you type yourself (see Privacy & network).

Import & export (.nlx)

From the File menu you can import or export any sheet as a .nlx file — a portable, self-contained copy you can move between Macs, back up, or share.

Note: app-wide constants are not embedded into .nlx exports. A sheet that references a constant expects that constant to exist on the machine that opens the file. See Styling & constants.

Window sizing

The main window resizes down to a 260 pt content height for compact desks; the default is 800×600, and the sidebar and results column keep scrolling safely at any size.