[PD] alias.mine file for OSX

[Alex from Idoia]

Hello,
In the pd doc, is said that we can create an alias for pd to  avoid to 
type the complete path everytime we open a terminal window. It is also 
said to add the alias command line in the ~/.tcshrc file to keep track 
of the alias for further uses.
Is that something to do with an alias.mine file ? How to create a such 
file ? I could not find the ~/.tcshrc.
Thanks