Add missing hyphen to 'rough-handed'
Clarify '25K to 300 symbols to strings' as '25K symbols vs. 300 strings'
Spelling fix 'acutal' to 'actual'
Clarify 'should not be used in preference to' as 'should be avoided in favor of'
Realign comment indenting per context
Spelling fix 'allowal' to 'allowable'