Standard packages

The following packages are distributed with LaTeX:
alltt
This package provides the 41 environment, which is like the 42 environment except that 43, 44, and 45 have their usual meanings. It is described in 46 and <#129#>LaTeX: A Document Preparation System<#129#>.
doc
This is the basic package for typesetting the documentation of LaTeX<#130#><#130#> programs. It is described in 47 and in <#131#>The LaTeX Companion<#131#>.
exscale
This provides scaled versions of the math extension font. It is described in 48 and <#132#>The LaTeX Companion<#132#>.
fontenc
This is used to specify which font encoding LaTeX<#133#><#133#> should use. It is described in 49.
graphpap
This package defines the 50 command; this can be used in a 51 environment.
ifthen
Provides commands of the form `if...then do... otherwise do...'. It is described in 52 and <#135#>The LaTeX Companion<#135#>.
inputenc
This is used to specify which input encoding LaTeX<#137#><#137#> should use. It is described in 53.
latexsym
LaTeX2e<#138#><#138#> no longer loads the LaTeX<#139#><#139#> symbol font by default. To access it, you should use the 54 package. It is described in 55 and in <#140#>The LaTeX Companion<#140#>; see also Section~#Secproblems#141>.
makeidx
This provides commands for producing indexes. It is described in <#142#>LaTeX: A Document Preparation System<#142#> and in <#143#>The LaTeX Companion<#143#>.
newlfont
This is used to emulate the font commands of LaTeX~2.09 with the New Font Selection Scheme. It is described in <#144#>The LaTeX Companion<#144#>.
oldlfont
This is used to emulate the font commands of LaTeX~2.09. It is described in <#145#>The LaTeX Companion<#145#>.
showidx
This causes the argument of each 56 command to be printed on the page where it occurs. It is described in <#146#>LaTeX: A Document Preparation System<#146#>.
syntonly
This is used to process a document without typesetting it. It is described in 57 and in <#147#>The LaTeX Companion<#147#>.
tracefnt
This allows you to control how much information about LaTeX's font loading is displayed. It is described in <#148#>The LaTeX Companion<#148#>.