Quirks

• A name can't be a number, so 2048 can't be defined as a word. Anything that parses as a number is a number (values).
• Locals bound in the condition of a while are gone by the time the body runs. Keep the value on the stack instead (flow).
• A tab's key queue holds 63 keys. Keys pressed while a long computation runs are dropped once it is full, and keys queued during a failing line are thrown away (keyboard).
• A line holds 200 characters, less when the stack takes up room before the ». Longer code goes in a definition.
• ask and calc read a line with the prompt's editing keys but without history and without completion.
• Tab titles set with title aren't saved and aren't part of a world. A program that fails halfway leaves its title behind.
• The mouse belongs to QEMU's window after the first click. Ctrl-Alt-G releases it, and keys QEMU grabs itself, such as Ctrl-Alt-1 and Ctrl-Alt-2, never reach Subverge.
• The first run of a quote is interpreted, and the compiled version is used from the second. A very short quote can be slower on the second run than it looks, since compiling has a cost (JIT).
• Booting a new ISO with an old installed disk attached loads the root saved on that disk, so sys shows the old version until you run install again.
• rand is seeded from the CPU's cycle counter, which is fine for games and not for secrets (numbers).
• The clock shows UTC unless the machine was started with a local-time clock.
• A write with poke, out or hexview can't be undone by back, because it isn't part of the world (smarties).
• A failing line is undone completely, including definitions made earlier on the same line.
• Everything a line prints before it fails stays on the screen, even though the line itself is undone.
• Characters outside ASCII, such as ω and ℵ₀, are drawn by redefining unused characters of the VGA font, and they can't be typed. Use omega, aleph0 and the \w and \A escapes (prompt).
• An installed disk holds your tabs and root. It doesn't hold the help pages, which come from the kernel and always match the version that is running.