Parses, evaluates and outputs a GString.
# S3 method for default
gcat(..., file="", append=FALSE, envir=parent.frame())Returns (invisibly) a character string.
character strings passed to gstring().
A connection, or a pathname where to direct the output.
If "", the output is sent to the standard output.
Only applied if file specifies a pathname
If TRUE, then the output is appended to the file, otherwise
the files content is overwritten.
The environment in which the GString is evaluated.
Henrik Bengtsson
gstring().