What does this mean?

The little dashes on the aspect symbols on Astro.com
So if the square has a dash is it that not as strong or something??

Example what's circled in blue

http://i393.photobucket.com/albums/pp14/yumyum987xo/Mobile% 20Uploads/20160623_180639_zpsngspv7cj.png

I'm not really sure. Here's an explanation from someone on another astro website.

The "a" and "s" are what indicates applying or separating, not the positive or negative value. From my understanding, the negative sign is indicative of relative planetary positions and speed.
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Positive applying = the faster object is behind and breaking a sweat to catch up

Negative applying = the faster object is already ahead and creating the aspect by sheer force (speed); you could consider it "pulling along", or "paving the way"

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Positive separating = the faster object is finally ahead and has left the slower one in the dust

Negative separating = the faster object is still behind, but making tenacious headway for the next aspect; "past one hurdle, onto the next"

Okay that helps a little, I knew the basics about the A&S

Still can't figure out those damn dash marks