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I'd like to use, for this specific instance, letter style enumeration [ like a) b) c) ] . I realize that I can nest one enumerate environment in another and the style will change, but I don't want a dangling "1." from the topmost enumerate environment.

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up vote 4 down vote accepted

Write into Document->Settings->Preamble:


For deeper values use also [3], [4]. Inside LyX you will still see the 1. If you want to change this too, then you'll have to rewrite your LyX layout file.

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Thanks for the answer. Is there a way to have these settings apply to a specific enumerate environment? For example, in one part of the document I want the highest level symbol to be letters, and in another part of the document I want the highest level symbol to be numbers. – Gus Mar 23 '11 at 15:42
yes @Gus, see my answer. you'll need to use \renewcommand repeatedly. – Sparkler Nov 21 '14 at 22:40

Short answer

  • To get a), add this to the preamble: \renewcommand{\labelenumi}{\alph{enumi})}
  • To get [a], add this to the preamble: \renewcommand{\labelenumi}{[\alph{enumi}]}

If you don't want the change to occur globally, then add this code right before the enumeration (and resotre right after, if needed).

Long answer

In the preamble, use the \renewcommand{indicator}{format} syntax for each level of heirarchy you would like to change (4 level max. are supported), where indicator is either of the following label indicators:

  1. \labelenumi -- 1st level
  2. \labelenumii -- 2nd level
  3. \labelenumiii -- 3rd level
  4. \labelenumiv -- 4th level

and format is a macro consisting of enumerators and styles.

The style can be any of the following:

  • \arabic{enumerator}, for 1, 2, 3, ...
  • \alph{enumerator}, for a, b, c, ...
  • \Alph{enumerator}, for A, B, C, ...
  • \roman{enumerator}, for i, ii, iii, ...
  • \Roman{enumerator}, for I, II, III, ...

The enumerator can be any of the following:

  1. enumi -- 1st level
  2. enumii -- 2nd level
  3. enumiii -- 3rd level
  4. enumiv -- 4th level

I personally prefer the 1.4.2 a) repeating format, for which you need:

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Use the default "Numbered list" [^P E], then ctrl+click over a list element. Select "Custom Item". You will see the default symbols but you will get also a "Custom Item" box:

1. Custom Item [A]Fruits:

a) Custom Item [A.1] orange

b) Custom Item [A.2] apple

will produce:

A Fruits:

A.1 orange

A.2 apple

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Welcome to TeX.SX! You can have a look at our starter guide to familiarize yourself further with our format. – Pier Paolo Jan 21 '15 at 20:07

in preamble

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