🚀 go-pugleaf

Thanks to all who replied to my request. The first answer is that there is
no really easy way to do it. But the following solutions work :

1) Put a tilde on a white space :
   \~\ 

2) Use the number of the character :
   \char'176

3) Use the mathematical tilde without argument
   $\tilde{}$   or even, to have roman font :   $\rm \tilde{}$

4) Use the \verb command
   \verb|~|
NB : it gives a \tt tilde not a \rm tilde !!!

5) Sometimes, you may want to use
   $\sim$
but this gives a large tilde...

   Karl