`gnuplot` is a command-driven interactive function and data plotting program.
 It is case sensitive (commands and function names written in lowercase are
 not the same as those written in CAPS).  All command names may be abbreviated
 as long as the abbreviation is not ambiguous.  Any number of commands may
 appear on a line (with the exception that `load` or `call` must be the final
 command), separated by semicolons (;).  Strings are indicated with quotes.
 They may be either single or double quotation marks, e.g.,

       load "filename"
       cd 'dir'

 although there are some subtle differences (see `syntax` for more details).

 Any command-line arguments are assumed to be names of files containing
 `gnuplot` commands, with the exception of standard X11 arguments, which are
 processed first.  Each file is loaded with the `load` command, in the order
 specified.  `gnuplot` exits after the last file is processed.  When no load
 files are named, `gnuplot` enters into an interactive mode.  The special
 filename "-" is used to denote standard input.  See "help batch/interactive"
 for more details.

 Many `gnuplot` commands have multiple options.  These options must appear in
 the proper order, although unwanted ones may be omitted in most cases.  Thus
 if the entire command is "command a b c", then "command a c" will probably
 work, but "command c a" will fail.

 Commands may extend over several input lines by ending each line but the last
 with a backslash (\).  The backslash must be the _last_ character on each
 line.  The effect is as if the backslash and newline were not there.  That
 is, no white space is implied, nor is a comment terminated.  Therefore,
 commenting out a continued line comments out the entire command
 (see `comments`).  But note that if an error occurs somewhere on a multi-line
 command, the parser may not be able to locate precisely where the error is
 and in that case will not necessarily point to the correct line.

 In this document, curly braces ({}) denote optional arguments and a vertical
 bar (|) separates mutually exclusive choices.  `gnuplot` keywords or `help`
 topics are indicated by backquotes or `boldface` (where available).  Angle
 brackets (<>) are used to mark replaceable tokens.  In many cases, a default
 value of the token will be taken for optional arguments if the token is
 omitted, but these cases are not always denoted with braces around the angle
 brackets.

 For on-line help on any topic, type `help` followed by the name of the topic
 or just `help` or `?` to get a menu of available topics.

 The new `gnuplot` user should begin by reading about `plotting` (if on-line,
 type `help plotting`).

 See the simple.dem demo, also available together with other demos on the web page
           http://www.gnuplot.info/demo/simple.html

Help topics available:
    batch/interactive bugs              commands          comments
    coordinates       copyright         environment       expressions
    glossary          graphical         help-desk         introduction
    line-editing      mouse             new-features      old_bugs
    plotting          set               show              startup
    substitution      syntax            time/date