The RemoveAttribute command removes custom attributes from help database. The built in attributes cannot be removed.

Help database must be writable in order to remove an attribute.

$\mathrm{with}\left(\mathrm{HelpTools}\right)\:$$\mathrm{with}\left(\mathrm{Database}\right)\:$

$\mathrm{dir}≔\mathrm{FileTools}:-\mathrm{JoinPath}\left(\left[''maple''\,''toolbox''\,''UserHelp''\,''lib''\right]\,\mathrm{base}='\mathrm{homedir}'\right)$

$\mathrm{dir}≔''C:\backslash Users\backslash jsmith\backslash maple\backslash toolbox\backslash UserHelp\backslash lib''$

$$\begin{gathered} \mathbf{if}\mathbf{not}\mathrm{FileTools}:-\mathrm{Exists}\left(\mathrm{dir}\right)\mathbf{then} \\ \mathrm{FileTools}:-\mathrm{MakeDirectory}\left(\mathrm{dir}\,'\mathrm{recurse}'=\mathrm{true}\right) \\ \mathbf{end}\mathbf{if}\: \end{gathered}$$

$\mathrm{hdb}≔\mathrm{Create}\left(\mathrm{dir}\right)$

$''C:\backslash Users\backslash jsmith\backslash maple\backslash toolbox\backslash UserHelp\backslash lib\backslash maple.help''$

$\mathrm{SetAttribute}\left(\mathrm{hdb}\,'\mathrm{my\_attribute}'\,'\mathrm{true}'\right)$

$\mathrm{RemoveAttribute}\left(\mathrm{hdb}\,'\mathrm{my\_attribute}'\right)$

The HelpTools[Database][RemoveAttribute] command was introduced in Maple 18.

For more information on Maple 18 changes, see Updates in Maple 18.