resname 'A 1'
More importantly, ribose atoms can be given names like C5' or C5* (depending on the age of the PDB record). The lexer in VMD has been modified so that C5', O", and N'' can be used without quotes, but it cannot handle an unquoted asterisk (* conflicts with multiplication and the parser is not able to resolve the difference). Some examples are:
name 'O5*' segname 'A *' name O5'
Quotes may also be used to get around a reserved selection
word, like x. The selection command segname x will give
an error because x is another keyword. Instead, use segname 'x'. There is an escape mechanism for including single
quotes inside a single quoted string which uses a backslash
\') before the single quote. This allows unusual names like
C ' to be quoted as
segname x <---- error; conflicts with the 'x' keyword segname 'x' name 'O5\''
Also, double quotes (discussed in the next section) can be used,
"C '" or