Functions Details:
Convert a name/value dict to a string of attributes
Find link to target relative to origin.
href(
_ref,
_label,
* * attrs)
Return a href to 'ref' with name 'label' and attributes
Return a name anchor with given reference and label
Wrap the body in a span of the given class
Wrap the body in a div of the given class
Wrap the body in a tag of given type and attributes
Create a description div for the given text
Replaces spaces in the given string with   sequences. Does NOT
replace spaces inside tags