Short Trendline Metatrader

I middle click my mouse and can draw a visual trendline, I'd like to connect fractals but when I let go, the line disappears?

U know where your main chart is yeah? where the candles are?
Look just above this screen and to the left. You see some buttons:
an arrow, a crosshair, a straight line, a horizontal line and then there shud be a diagonal line.
Click the diagonal line.
Now your mouse has a cross hair, click hold and drag on the screen and u wil have a trendline that stays there.
To move it or change it double click on it, and pull the dots.

Ok, I got that by middle clicking the mouse and I see the trendline as I draw it but it disappears as soon as I let go of the left mouse button. What's keeping it visible on your end?

No its not on your mouse.

Look on your screen for a small box with a black diagonal line, and click it.
Look at the top right of your screen.

Got it, thanks for the help!

np, u r now released into the world of the mt4 platform.