diff --git a/compiler/res/prog8lib/shared_compression.p8 b/compiler/res/prog8lib/shared_compression.p8
index aeaf52993..fe663741d 100644
--- a/compiler/res/prog8lib/shared_compression.p8
+++ b/compiler/res/prog8lib/shared_compression.p8
@@ -219,7 +219,7 @@ _cb_mod3    jsr  $ffff      ; modified
             inc  P8ZP_SCRATCH_W2+1
             bcs  _loop
 
-_orig_target    .word  0
+_orig_target    .word  0        ; modified
 _end
             ; return w2-orig_target, the size of the decompressed data
             lda  P8ZP_SCRATCH_W2
@@ -239,6 +239,7 @@ _end
         ; -- Decodes "ByteRun1" (aka PackBits) RLE compressed data. Control byte value 128 ends the decoding.
         ;    Also stops decompressing if the maxsize has been reached.
         ;    Returns the size of the decompressed data.
+        ; TODO: Romable
         %asm {{
             sta  P8ZP_SCRATCH_W1        ; compressed data ptr
             sty  P8ZP_SCRATCH_W1+1
diff --git a/compiler/res/prog8lib/strings.p8 b/compiler/res/prog8lib/strings.p8
index 3b1934a8a..8f5bf936b 100644
--- a/compiler/res/prog8lib/strings.p8
+++ b/compiler/res/prog8lib/strings.p8
@@ -47,7 +47,6 @@ _loop		dey
 		bne  _loop
 +		rts
         }}
-;                asmgen.out("  jsr  prog8_lib.func_leftstr")
     }
 
     asmsub right(uword source @AY, ubyte length @X, uword target @R1) clobbers(A,Y) {
@@ -56,16 +55,16 @@ _loop		dey
         ; Also, you have to make sure yourself that length is smaller or equal to the length of the source string.
         ; Modifies in-place, doesn’t return a value (so can’t be used in an expression).
         %asm {{
-                ; need to copy the the cx16 virtual registers to zeropage to be compatible with C64...
-                stx  P8ZP_SCRATCH_B1
-                sta  cx16.r0
-                sty  cx16.r0+1
-                jsr  length
-                tya
-                sec
-                sbc  P8ZP_SCRATCH_B1
-                clc
-                adc  cx16.r0
+		; need to copy the the cx16 virtual registers to zeropage to be compatible with C64...
+		stx  P8ZP_SCRATCH_B1
+		sta  cx16.r0
+		sty  cx16.r0+1
+		jsr  length
+		tya
+		sec
+		sbc  P8ZP_SCRATCH_B1
+		clc
+		adc  cx16.r0
 		sta  P8ZP_SCRATCH_W1
 		lda  cx16.r0+1
 		adc  #0
@@ -96,7 +95,7 @@ _loop		dey
         ; Also, you have to make sure yourself that start and length are within bounds of the strings.
         ; Modifies in-place, doesn’t return a value (so can’t be used in an expression).
         %asm {{
-                ; need to copy the the cx16 virtual registers to zeropage to be compatible with C64...
+		; need to copy the the cx16 virtual registers to zeropage to be compatible with C64...
 		; substr(source, target, start, length)
 		sta  P8ZP_SCRATCH_B1
 		lda  cx16.r0
@@ -178,7 +177,7 @@ _found      tya
             sec
             rts
 
-_str    .word 0
+_str    .word 0 ; modified
             ; !notreached!
         }}
     }
@@ -333,6 +332,7 @@ _done       rts
 ; Notes:  Clobbers A, X, Y. Each * in the pattern uses 4 bytes of stack.
 ;
 ; see http://6502.org/source/strings/patmatch.htm
+; TODO: Romable   (or skip it?)
 
 strptr = P8ZP_SCRATCH_W1
 
diff --git a/docs/source/todo.rst b/docs/source/todo.rst
index 14f04e195..9d9ddfabc 100644
--- a/docs/source/todo.rst
+++ b/docs/source/todo.rst
@@ -1,14 +1,17 @@
 TODO
 ====
 
+make compiler quiet when running .p8ir files via -vm (also add -quiet flag to suppress output on regular operation?)
+
+romable: check library files for routines that are not yet romable and add "TODO: Romable" comment
+romable: fix as many of those issues as possible to improve romability of library code
+
 ...
 
 
 Future Things and Ideas
 ^^^^^^^^^^^^^^^^^^^^^^^
 
-- make compiler quiet when running .p8ir files via -vm (also add -quiet flag to suppress output on regular operation?)
-- romable: fix / add "TODO: Romable" in libraries
 - romable: should we have a way to explicitly set the memory address for the BSS area (instead of only the highram bank number on X16, allow a memory address too for the -varshigh option?)
 - Kotlin: can we use inline value classes in certain spots?
 - add float support to the configurable compiler targets