diff --git a/Pointing_shortcut.md b/Pointing_shortcut.md
new file mode 100644
index 0000000..79b1504
--- /dev/null
+++ b/Pointing_shortcut.md
@@ -0,0 +1,12 @@
+# Shortcut when adjusting poiting
+
+A useful command is to switch between which slit is open or closed (here using OAPU044 & OAPU092). This is useful because when adjusting pointing, one must switch between the two configurations back and forth regularly.
+
+`caputq SARFE10-OAPU044:MOTOR_W 0.25; caputq SARFE10-OAPU044:MOTOR_H 0.25; caputq SARFE10-OAPU092:MOTOR_W 3.00; caputq SARFE10-OAPU092:MOTOR_H 3.00; `
+(to open the back slit and close the upstream one)
+
+`caputq SARFE10-OAPU044:MOTOR_W 3.00; caputq SARFE10-OAPU044:MOTOR_H 3.00; caputq SARFE10-OAPU092:MOTOR_W 0.25; caputq SARFE10-OAPU092:MOTOR_H 0.25; `
+(to do the opposite, open the front and close down the downstream slit)
+
+To view the beam after both slits, use SAROP21-PPRM113 camera (from the screen_panel).
+
diff --git a/computing.md b/computing.md
index e996e56..ff6e72e 100644
--- a/computing.md
+++ b/computing.md
@@ -26,7 +26,7 @@ To check the currently available space:
 
 
 ## File permsissions
-We should all be part of the unx-cristall group. Please make sure permissions are set at least `chmod u+rw,g+rw,` so that everyone within the group can access and modify documents. Only set more restrictive permissions when necessary.
+We should all be part of the unx-cristall group. Please make sure permissions are set at least `chmod g+rw,` so that everyone within the group can access and modify documents. Only set more restrictive permissions when necessary. (Alternatively `chmod g=u` to set the permissions equal to user permissions).
 
 
 ## Anaconda
@@ -44,12 +44,18 @@ The main environments are:
  
 for instrument control and data analysis. We are trying to track recent upstream packages but please only update if you ensure a working state afterwards and document the changes.
 
+To be able to use the shortcut for activation, e.g. `conda activate slic` the environment directory needs to be added to your `.condarc` file as follows:
+
+````
+envs_dirs:
+  - /sf/cristallina/applications/conda/envs
+````
+
 A backup environment is currently located at: 
 ````
 /gpfs/photonics/swissfel/res/cristallina-staff/p19739/backup/cristallina2
 ````
-To activate the environment 
-`conda activate /gpfs/photonics/swissfel/res/cristallina-staff/p19739/backup/cristallina2` if some other conda installation is already available. 
+if all else fails.
 
 
 # sf_datafiles directly from github