# record 1: header: parent, keywords
# record 2: calling parameters
# record 3: submit buttons
# record 4: html form content

:geometry, analytic geometry
line, plot line, line plot, line defined by equation, line equation
linear equation, linear equation plot, plot linear equation, graph, graphing

:precision, 20
operation, line plot
size, 650x480
picturesize, 300x360

:, Plot

:
 $submit1
 line defined by
 <input type="text" size="40" name="formula" value="3x + 5y = 7">
