| .troff | Make the n built-in condition false, and the t built-in condition true. This undoes the effect of the nroff request. |
| .unformat xx |
| | This request ‘unformats’ the diversion xx. Contrary to the .asciify request, which tries to convert formatted elements of the diversion back to input tokens as much as possible, .unformat will only handle tabs and spaces between words (usually caused by spaces or newlines in the input) specially. The former are treated as if they were input tokens, and the latter are stretchable again. Note that the vertical size of lines is not preserved. Glyph information (font, font size, space width, etc.) is retained. Useful in conjunction with the .box and .boxa requests. |
| .vpt n | Enable vertical position traps if n is non-zero, disable them otherwise. Vertical position traps are traps set by the wh or dt requests. Traps set by the it request are not vertical position traps. The parameter that controls whether vertical position traps are enabled is global. Initially vertical position traps are enabled. |
| .warn n | Control warnings. n is the sum of the numbers associated with each warning that is to be enabled; all other warnings will be disabled. The number associated with each warning is listed in troff(1). For example, .warn~0 will disable all warnings, and .warn~1 will disable all warnings except that about missing glyphs. If n is not given, all warnings will be enabled. |
| .warnscale si |
| | Set the scaling indicator used in warnings to si. Valid values for si are u, i, c, p, and P. At startup, it is set to~ i. |
| .while c anything |
| | While condition~ c is true, accept anything as input; c~ can be any condition acceptable to an if request; anything can comprise multiple lines if the first line starts with [rs]{ and the last line ends with [rs]}. See also the break and continue requests. |
| .write stream anything |
| | Write anything to the stream named stream. stream must previously have been the subject of an open request. anything is read in copy mode; a leading~ [dq] will be stripped. |
| .writec stream anything |
| | Similar to write but without writing a final newline. |
| .writem stream xx |
| | Write the contents of the macro or string xx to the stream named stream. stream must previously have been the subject of an open request. xx is read in copy mode. |
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