music notation chaft

forgive me for asking, but I swore that I have looked at a chart in either level 1 or 2 of all the music notations such as ties, octave symbols, etc...  

I can not find it again.  was I dreaming?  I am woindering about the half circle with a dot in the middle of it that's at the top of the staff at the end of "temperature"  once I find that chart, I'll print it  :)

thank you in advance for your help

Monty Wheeler