# pretty print from autoindent and ased editor
        # Piece wise profits calculator
        # written on Windows XP on eTCL
        # working under TCL version 8.5.6 and eTCL 1.0.1
        # gold on TCL WIKI , 10apr2014
        package require Tk
        namespace path {::tcl::mathop ::tcl::mathfunc}
        frame .frame -relief flat -bg aquamarine4
        pack .frame -side top -fill y -anchor center
        set names {{} { selling price per unit:} }
        lappend names { number of units:}
        lappend names { production cost per unit: }
        lappend names { taxes percent % : }
        lappend names {answers: total costs dollars:}
        lappend names {total sales dollars:}
        lappend names {profits dollars:}
        foreach i {1 2 3 4 5 6 7} {
    label .frame.label$i -text [lindex $names $i] -anchor e
    entry .frame.entry$i -width 35 -textvariable side$i
grid .frame.label$i .frame.entry$i -sticky ew -pady 2 -padx 1 }
        proc about {} {
            set msg "Calculator for Piece Wise Profits             
            from TCL WIKI,
            written on eTCL "
            tk_messageBox -title "About" -message $msg } 
        proc calculate {     } {
            global answer2
            global side1 side2 side3 side4 side5
            global side6 side7 testcase_number 
            incr testcase_number           
            set selling   $side1  
            set unitsnum  $side2
            set costunits $side3
            set taxepct     $side4
            set side5 [* $side1 $side2 ] 
            set side6 [* $side3 $side2 ]
            set profits [- [* $side1 $side2 ] [* $side3 $side2 ] ]
            set totaltax [* $profits [/ $taxepct 100. ]]
            set profits [- $profits $totaltax]
            set side7 $profits
             }
        proc fillup {aa bb cc dd ee ff gg} {
            .frame.entry1 insert 0 "$aa"
            .frame.entry2 insert 0 "$bb"
            .frame.entry3 insert 0 "$cc"
            .frame.entry4 insert 0 "$dd"
            .frame.entry5 insert 0 "$ee"
            .frame.entry6 insert 0 "$ff"
            .frame.entry7 insert 0 "$gg"}
        proc clearx {} {
            foreach i {1 2 3 4 5 6 7} {
                .frame.entry$i delete 0 end } }
        proc reportx {} {
            global side1 side2 side3 side4 side5
            global side6 side7 testcase_number 
            console show;
            puts "%|table printed in| tcl wiki format|% "
            puts "&|quanity| value| comment, if any|& "
            puts "&|testcase number| $testcase_number||& "
            puts "&| selling price per unit:| $side1 ||&"
            puts "&| number of units:| $side2||& "
            puts "&| production cost per unit:| $side3||& "
            puts "&| taxes percent % :| $side4 ||&"
            puts "&| answers: total costs:| $side5||& "
            puts "&| total sales:| $side6 ||&"
            puts "&| total profits dollars :| $side7 ||&"
            }
         frame .buttons -bg aquamarine4
        ::ttk::button .calculator -text "Solve" -command { calculate   }
        ::ttk::button .test2 -text "Testcase1" -command {clearx;fillup 100. 50. 65.0  0.0 5000.0 3250.  1750. }
        ::ttk::button .test3 -text "Testcase2" -command {clearx;fillup 100. 50. 65.0  10.0 5000.0 3250.  1575. }
        ::ttk::button .test4 -text "Testcase3" -command {clearx;fillup 100. 50. 65. 20. 5000. 3250.   1400.0}
        ::ttk::button .clearallx -text clear -command {clearx }
        ::ttk::button .about -text about -command about
        ::ttk::button .cons -text report -command { reportx }
        ::ttk::button .exit -text exit -command {exit}
        pack .calculator  -in .buttons -side top -padx 10 -pady 5
        pack  .clearallx .cons .about .exit .test4 .test3 .test2   -side bottom -in .buttons
        grid .frame .buttons -sticky ns -pady {0 10}
        . configure -background aquamarine4 -highlightcolor brown -relief raised -border 30
        wm title . "Piece wise profits"       

  puts " %| testcase $testcase_number | value| units |comment |%"
  puts " &| volume| $volume| cubic meters |based on length $side1 and width $side2   |&"