Initializing help system before first use

# svgclosing

Purpose
Test whether the display window is being closed.
Synopsis
`function svgclosing:boolean`
Return value
'false' until the display window is about to be closed, 'true' afterwards.
Example
The following loop uses the browser window opening status as stopping criterion.

    solct:= 0
    svgrefresh              ! Start graph display before svgclosing test
    while (solct<NBSOL and not svgclosing) do
      solct+=1
      draw_solution(solct)  ! Draws a graph calling svgrefresh and svgpause
    end-do
    svgwaitclose

Further information
This function can be used to intercept the event of the display window being closed in order to adapt the behaviour of the model execution ( e.g. to interrupt a loop with repeated graphical displays or an optimization solver run).
Related topics
svgwaitclose.
Parent Topic Procedures and Functions

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