The cells in the right column of the table shown in figure 4.5 have different leading or padding. Observe that the default leading of the content of a cell in text mode is equal to the font size. Internally, the leading is set like this: This is different from the default leading of a Phrase object outside a PdfPCell.
There can be a lot of differences between a UDF and stored procedure, as the prior link has shown. Another difference is the UDF can be directly selected from, whereas a stored procedure requires one to insert the results into a tempory table or table variable.
Stored procedure can execute function. Cannot be the part of Select query as a column. Stored Procedures cannot be used in the SQL statements anywhere in the WHERE/HAVING/SELECT. Function cannot execute stored procedure. Can be the part of select query as a column. Functions be used in the SQL statements anywhere in the WHERE/HAVING/SELECT. Exception handling.