Literal text replacement using "{...}"

since version 4.2.6: in Pseudo instructions: macro, .macro, endm and .endm
8080 pseudo instructions: MACROmacros
since version 4.4.6: everywhere

Before a source line is assembled, Expressions
8080 Assembler: Expressionsexpressions between "{" and "}" are resolved.

Literal text replacement is typically used to create calculated Pseudo instructions: Label definition
Numeric expressions: Labels
8080 Assembler: Labelslabel names and can solve a common problem with Pseudo instructions: macro, .macro, endm and .endm
8080 pseudo instructions: MACROmacros.

mx = 0  ; a counter which serves as a seed for Pseudo instructions: Label definition
Numeric expressions: Labels
8080 Assembler: Labelslabels in all Pseudo instructions: macro, .macro, endm and .endm
8080 pseudo instructions: MACROmacros
;
.Pseudo instructions: macro, .macro, endm and .endm
8080 pseudo instructions: MACROmacro extend_sign  ; a Pseudo instructions: macro, .macro, endm and .endm
8080 pseudo instructions: MACROmacro with a forward jump
    ld  h,0
    ld  a,l
    add a
    jr  nc,L{mx}    ; jump forward
    dec h
L{mx}:
mx = mx+1           ; next use of Pseudo instructions: macro, .macro, endm and .endm
8080 pseudo instructions: MACROmacro will use next number
.Pseudo instructions: macro, .macro, endm and .endm
Pseudo instructions: rept, .rept, endm and .endmendm

While backward jumps in Pseudo instructions: Label definition
Numeric expressions: Labels
8080 Assembler: Labelslabels can simply use a redefinable Pseudo instructions: Label definition
Numeric expressions: Labels
8080 Assembler: Labelslabel to jump to, this is not possible with forward jumps. Besides other solutions (you could create a .Assembler directives: #local, #endlocal, .local and .endlocal
Pseudo instructions: #local, #endlocal, .local and .endlocal
Including C Source Files: #local, #endlocal, .local and .endlocallocal context in your Pseudo instructions: macro, .macro, endm and .endm
8080 pseudo instructions: MACROmacro) you can generate Pseudo instructions: Label definition
Numeric expressions: Labels
8080 Assembler: Labelslabel names using a counter. In the above #insert: Examples:
#assert: Example:
incbin: Examples:
#assert: Example:example the first use of the Pseudo instructions: macro, .macro, endm and .endm
8080 pseudo instructions: MACROmacro would use Pseudo instructions: Label definition
Numeric expressions: Labels
8080 Assembler: Labelslabel L0, the second L1 and so on.

You can also iterate over a range of programmatically named Pseudo instructions: Label definition
Numeric expressions: Labels
8080 Assembler: Labelslabels:

_n = 0
.Pseudo instructions: rept, .rept, endm and .endm
8080 pseudo instructions: REPTrept mx
    .Pseudo instructions: defw, dw, .dw, .word
8080 pseudo instructions: DWdw L{_n}
_n = _n +1
.Pseudo instructions: macro, .macro, endm and .endm
Pseudo instructions: rept, .rept, endm and .endmendm

This will generate an array with all addresses where Pseudo instructions: Label definition
Numeric expressions: Labels
8080 Assembler: Labelslabel L{mx} in the above #insert: Examples:
#assert: Example:
incbin: Examples:
#assert: Example:example was used.
Actually you can implement arrays of Pseudo instructions: Label definition
Numeric expressions: Labels
8080 Assembler: Labelslabels this way e.g. to automatically create jump tables.