svSetValue(shvarFile *s, const char *key, const char *value);
-/* Write the current contents if modified. Returns -1 on error
+/* Write the current contents iff modified. Returns -1 on error
* and 0 on success. Do not write if no values have been modified.
* The mode argument is only used if creating the file, not if
* re-writing an existing file, and is passed unchanged to the