## 15.3. Predefined Number Registers

Items marked with a dagger () appear in more recent versions of the me macros. You will need to double-check them on your system.

`$0` | Section depth
`$1` | First section number
`$2` | Second section number
`$3` | Third section number
`$4` | Fourth section number
`$5` | Fifth section number
`$6` | Sixth section number
`$V` | Relative vertical spacing in displays
`$c` | Current column number
`$d` | Delayed text number
`$f` | Footnote number
`$i` | Paragraph base indent
`$l` | Column width
`$m` | Number of columns in effect
`$p` | Numbered paragraph number
`$s` | Column indent
`$v` | Relative vertical spacing in text
`bi` | Display (block) indent
`bm` | Bottom title margin
`bs` | Display (block) pre/post spacing
`bt` | Block keep threshold
`ch` | Current chapter number
`df` | Display font
`es` | Equation pre/post space
`ff` | Footnote font
`fi` | Footnote indent (first line only)
`fm` | Footer margin
`fp` | Footnote point size
`fs` | Footnote prespace
`fu` | Footnote undent (from right margin)
`hm` | Header margin
`ii` | Indented paragraph indent
`pf` | Paragraph font
`pi` | Paragraph indent
`po` | Simulated page offset
`pp` | Paragraph point size
`ps` | Paragraph prespace
`qi` | Quote indent (also shortens line)
`qp` | Quote point size
`qs` | Quote pre/post space
`sf` | Section title font
`si` | Relative base indent per section depth
`so` | Additional section title offset
`sp` | Section title point size
`ss` | Section prespace
`tf` | Title font
`tm` | Top title margin
`tp` | Title point size
`xs` | Index entry prespace
`xu` | Index undent (from right margin)
`zs` | Floating keep pre/post space

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