## `Pref::ansi` -- Use ANSI control sequences in terminal help

#### Introduction

`Pref::ansi(`FALSE`)` causes `?` to emit plain text help. Use if your terminal cannot display ANSI/vt100.

#### Call(s)

`Pref::ansi( <value>)`

#### Parameters

`value` | - | `TRUE`, `FALSE`, or `NIL`

#### Returns

the previously defined value

#### Related Functions

`help`

#### Details

- When using the terminal version of MuPAD, the documentation will usually be displayed using ANSI/vt100 sequences for boldface and underlining. If your terminal or your pager do not support these sequences, you will see them printed directly, which resembles noise. Use `Pref::ansi(`FALSE`)` to switch these sequences off.
- A call of `Pref::ansi` without arguments will return the current value. The argument `NIL` will reset the default value, which is `TRUE`.

#### Changes

- new function

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