Graphing calculator for MT4

Brief help on the indicator (it is also in the comments at the top of the code in more detail):
1. Before starting in the properties of the MT4 chart, enable the display of object descriptions, then after starting the indicator you will see a direct description of the control lines right on the chart.
2. After starting the indicator creates three control lines with the names OPEN, STOP, PROFIT and the STOP-OUT indicator line. Double-click on the control lines and drag them, respectively, to the levels from which you plan to open a deal (OPEN), the level at which the stop (STOP) will be located, and the level at which the take profit (PROFIT) will be located. Set the lot size in the indicator properties. Now, after a new tick arrives or after a manual refresh of the chart (right-click on the chart - "Refresh") in the upper left corner of the chart and on the control lines you will see the profit value, stop, the starting margin for the specified lot size, the maximum lot you can open with the existing balance, as well as the STOP-OUT indicator line will automatically move to the level at which the stop-out occurs.
3. You can repaint the indicative lines in your own color and set your style just like other graphic objects by right-clicking on the chart - the list of objects menu.