Removed 'remove_leading_zeros()' operator from list.
Wrapped long lines in example3.
Updated 'osa.bst' template with corrections and new entrytypes.
Updated html docs.
Fixed errors in the <ed> variable in the template, and wrapped long lines.
Fixed a typo: output should be 'example3' not 'example4'.
Minor corrections to example3.
Minor correction to spie_opteng.bst template.
Added example4 to examples folder.
Added example4 into the docs.