Strings which include spaces (for example, perhaps the units or comments attribute of a column) must be enclosed in single or double quotes. The quotes must be `matching': a string started with a single quote must be ended with a single quote and similarly for a double quote. A double quote can be included within a string terminated with single quotes and vice versa. Strings which do not include embedded spaces may optionally be enclosed in quotes, but they do not need to be.
CURSA Catalogue and Table Manipulation Applications