Print numbers with multiple digits

TODO

@@ -1,8 +1,9 @@
 # Intermediate code generation
 
-- Calculate maximum number of arguments that a function can have. Put procedure
-  arguments onto the stack, above the stack pointer. Should the offsets be
-  calculated during IR generation or target code generation?
+- To access named parameters and local variables inside a procedure, IR should
+  be able to reference them. During the generation the needed information (e.g.
+  offsets or registers) can be extracted from the symbol table and saved in the
+  operands.
 
 # ELF generation
 
@@ -16,4 +17,6 @@
 
 # Built-in
 
-Printi should be able to print numbers with multiple digits.
+Printi should print a sign for negative numbers.
+
+# Type analysis