.
179 [<<#349#>vertical-space<#349#>>]
One example of its use is when the text in the last
column of a 180 environment is set with 181; then
182 can be used to indicate the end of a row of the
183, whilst 184 will indicate the end of a line of text in a
paragraph within the column. This command can be used in the 185
environment as well as 186, and also the extended versions of
these environments offered by the <#351#>array<#351#> and <#352#>longtable<#352#>
packages in the tools collection.