How to bold description without using F.description ?

Scenario : 

User update description and put (b) behind 

when preview, system will bold description but other description without (b) will not  

Solution

Step 1 : Right click "Sales Invoice Detail Collection" --> Add Calculated Field

Step 2 : Set Display name as "Bolddesc" and set express "Replace([Description], '(b)', '')

Step 3 : Drag the field to Description 

Step 4 : Create Formatting Rules

Step 5 : Set name as "IsBold" 

Condition : Contains([Description], '(b)')

Font = [Font: Name=Microsoft Sans Serif, Size=8.25, Units=3, GdiCharSet=1, GdiVerticalFont=False] (select from the table set it as bold)

Step 6 : Apply rules 

Step 7 : Format is done