Display the help pages for installed packages that match the supplied pattern in an HTML browser window.
showHelp(pattern="methods", ...)string pattern to match to package names
allows user to specify two additional arguments:
remote - character string giving a valid URL for the R_HOME
directory on a remote location;
update - logical: if TRUE, attempt to update the package
index to reflect the currently available packages.
(Not attempted if remote is non-NULL.)
A list is invisibly returned, comprising:
all packages installed on user's system
selected packages based on specified pattern
path and file name of HTML Help Page
The specified pattern is matched to R-packages installed on
the user's system. The code uses the utils
function browseURL to display the HTML Help Pages using
a browser that the system associates with html
extensions. (See help for browseURL for other operating systems.