diff --git a/cheatsheets/julia.qmd b/cheatsheets/julia.qmd
index 404f69a..31dfcc3 100644
--- a/cheatsheets/julia.qmd
+++ b/cheatsheets/julia.qmd
@@ -1,22 +1,21 @@
 ## "meta"-tools
 
-
-|                                         | Julia                   | Python                      |
-|------------------------|------------------------|------------------------|
-| Documentation                           | `?obj`                  | `help(obj)`                 |
-| Object content                          | `dump(obj)`             | `print(repr(obj))`          |
-| Exported functions                      | `names(FooModule)`      | `dir(foo_module)`           |
-| List function signatures with that name | `methods(myFun)`        |                             |
-| List functions for specific type        | `methodswith(SomeType)` | `dir(SomeType)`             |
-| Where is ...?                           | `@which func`           | `func.__module__`           |
-| What is ...?                            | `typeof(obj)`           | `type(obj)`                 |
-| Is it really a ...?                     | `isa(obj, SomeType)`    | `isinstance(obj, SomeType)` |
+|                                         | Julia                   | Python                      | R                          |
+|--------------------|------------------|------------------|------------------|
+| Documentation                           | `?obj`                  | `help(obj)`                 | `?obj` , `help(obj)`       |
+| Object content                          | `dump(obj)`             | `print(repr(obj))`          | `str(obj)`                 |
+| Exported functions                      | `names(FooModule)`      | `dir(foo_module)`           | `ls("package:foo_module")` |
+| List function signatures with that name | `methods(myFun)`        |                             | `methods(myFun)`           |
+| List functions for specific type        | `methodswith(SomeType)` | `dir(SomeType)`             | `methods(SomeType)`        |
+| Where is ...?                           | `@which func`           | `func.__module__`           |                            |
+| What is ...?                            | `typeof(obj)`           | `type(obj)`                 | `class(obj)`               |
+| Is it really a ...?                     | `isa(obj, SomeType)`    | `isinstance(obj, SomeType)` | `is(obj, SomeType)`        |
 
 ## debugging
-|||
-|--|--|
-`@run sum(5+1)`| run debugger, stop at error/breakpoints
-`@enter sum(5+1)` | enter debugger, dont start code yet
-`@show variable` | prints: variable = variablecontent
-`@debug variable` | prints only to debugger, very convient in combination with `>ENV["JULIA_DEBUG"] = ToBeDebuggedModule` (could be `Main` as well)
 
+|                   |                                                                                                                                 |
+|------------------------------------|------------------------------------|
+| `@run sum(5+1)`   | run debugger, stop at error/breakpoints                                                                                         |
+| `@enter sum(5+1)` | enter debugger, dont start code yet                                                                                             |
+| `@show variable`  | prints: variable = variablecontent                                                                                              |
+| `@debug variable` | prints only to debugger, very convient in combination with `>ENV["JULIA_DEBUG"] = ToBeDebuggedModule` (could be `Main` as well) |