I try Cohesion to setup my own symbols, but I can not see the attribute name and instance name, when I put a symbol cell in a schematic. Moreover, when I reopen the schematic, I can see the instance name of the cell, what is wrong with my symbols?
If you define your own attribute, you need to read the html manual.
To display your attribute on the schematic, you need to edit the symbol attribute window inside the symbol editor.
I cannot find any aviable library in the internet yet. I usually create by my own if I need. Usually, for vdc and vsin, that is power and signal input, I will manully add them in the simulation file. Or you can make use of the spiceline parameter inside the symbol attribute to customize your needed. Here is the pmos symbol I created for your reference.