Here’s a cool Xcode trick that I never knew it could do. Type any of the prefixes below and then type control-. (period) to expand them to the full text. Control-/ will then select the next placeholder like it does for code completion. This is a really cool feature. Now I just have to remember all of the prefixes. Thanks go out to Scott for pointing it out.

Obj-C

@try == Try / Catch Block
@catch ==  Catch Block
@finally == Finally Block
log == NSLog() Call
a == Alloc / Init Call
aa ==  Array Declaration
ma ==  Mutable Array Declaration
fora == Array For Loop
init ==  Init Method Definition
dealloc == Dealloc Method Definition
nss == NSString
nsms == NSMutableString
nsma == NSMutableArray
nsd == NSDictionary
nsmd == NSMutableDictionary

C

if == If Block
ifelse == If / Else Block
elseif == Else If Block
for == For Loop
fori == For i Loop
while == While Loop
do == Do While Loop
switch == Switch Block
case == Case Block
else == Else Block
enum == Enum Definition
struct == Struct Definition
union == Union Definition
typedef == Type Definition
printf == Printf() Call
pm == #Pragma Mark
pim == #Import Statement (System)
pimf == #Import Statement (Framework)
pin == #Include Statement
pins == #Include Statement (System)
pif == #If Block
pifd == #Ifdef Block
pife == #If / Else Block
pifde = #Ifdef / Else Block
pifz == #If 0 Block
copyright == Copyright Comment
comment ==  Comment Selection
cseparator == Separator Comment

C++

pifdcpp == #Ifdef __cplusplus Block
pifdecpp == #Ifdef _cplusplus / Else Block
static_cast == Static Cast
dynamic_cast == Dynamic Cast
reinterpret_cast == Reinterpret Cast
try == Try / Catch Block
catch == Catch Block
cout == Cout Statement
coutm == Cout Message
namespace == Namespace Definition
class == Class Definition
extern == Extern \"C\" Statement
externb == Extern \"C\" Block

Java – note: many of the C/C++ macros work for Java

try == Try / Catch Block
catch == Catch Block
finally == Finally Block
println == Println() Call
synchronized == Synchronized Block

HTML

b == Bold
i == Italics
u == Underline
big == Bigger
small == Smaller
title == Title
strike == Strikethrough
sub == Subscript
sup == Superscript
tt == Typewriter Text
code == Code
center == Center
h1 == Heading 1
h2 == Heading 2
h3 == Heading 3
h4 == Heading 4
h5 == Heading 5
h6 == Heading 6
hr == Horizontal rule
a == Link
at == Link With Target
aa == Anchor
ol == Ordered List
ul == Ordered List
li == List Item