DropIt provides advanced features to modify abbreviated strings. It is possible to add an unlimited number of modifiers in each abbreviation, using the following syntax:
%Abbreviation#Modifier1#Modifier2%

Some destination examples for Rename action using modifiers:
(Destination ⇒ Original Filename ⇒ Result Filename)
%FileName#>3,4%.%FileExt% ⇒ Readme.txt ⇒ adme.txt
%FileName#s>(me)%.%FileExt% ⇒ Readme Example.doc ⇒ me Example.doc
%FileName#---#+%.%FileExt#---% ⇒ TEST NAME.JPG ⇒ Test name.jpg
%FileName#r(me,PH)%.%FileExt% ⇒ Memory me.zip ⇒ PHmory PH.zip

Case modifiers:
+ ⇒ Uppercase the first character of the string.
++ ⇒ Uppercase the first character of each word in the string.
+++ ⇒ Uppercase all characters in the string.
- ⇒ Lowercase the first character of the string.
-- ⇒ Lowercase all characters except the first character of each word in the string.
--- ⇒ Lowercase all characters in the string.
?? ⇒ Alternate upper and lower characters.
? ? ⇒ Alternate upper and lower characters, but leave space neutral.

String modifiers:
>d1,d2 ⇒ Take a string from position d1 (included) counting d2 characters (left to right).
<d1,d2 ⇒ Take a string from position d1 (included) counting d2 characters (right to left).
-d1,d2 ⇒ Take a string between d1 and d2 positions.
s>(s1) ⇒ Take a string from the substring s1 (included) until the end.
s>-(s1) ⇒ Take a string from the substring s1 (excluded) until the end.
s<(s1) ⇒ Take a string from the substring s1 (included) until the beginning.
s<-(s1) ⇒ Take a string from the substring s1 (excluded) until the beginning.
s-(s1,s2) ⇒ Take a string between string s1 and s2 (included).
s--(s1,s2) ⇒ Take a string between string s1 and s2 (excluded).
r(s1,s2) ⇒ Rename all occurrences of the string s1 with string s2.
regex(p1,r1) ⇒ Replace regex pattern p1 with regex replacement pattern r1.
d(s1) ⇒ Delete all occurrences of the string s1.
d>d1 ⇒ Delete d1 characters from the left of the string and take the rest.
d<d1 ⇒ Delete d1 characters from the right of the string and take the rest.
k(s1) ⇒ Keep only the group of characters of the string s1.
k-(s1) ⇒ Delete only the group of characters of the string s1.
a>(s1,d1) ⇒ Add a string s1 in position d1 from the beginning.
a<(s1,d1) ⇒ Add a string s1 in position d1 from the end.
lz(d1) ⇒ Add leading zeros up to d1 length of the string.

Cryptography modifiers: *
En(pass) ⇒ Encrypt with password.
De(pass) ⇒ Decrypt with password.
EnNPt(pass) ⇒ Encrypt with password, point skipped.
DeNPt(pass) ⇒ Decrypt with password, point skipped.
EnNSp(pass) ⇒ Encrypt with password, space skipped.
DeNSp(pass) ⇒ Decrypt with password, space skipped.
EnNSpPt(pass) ⇒ Encrypt with password, space and point skipped.
DeNSpPt(pass) ⇒ Decrypt with password, space and point skipped.
En(pass,exclude) ⇒ Encrypt with password, skipping all characters in exclude string.
De(pass,exclude) ⇒ Decrypt with password, skipping all characters in exclude string.

* Characters not allowed in filenames are not used. Instead, all characters are valid for passwords.