diff --git a/data/Termlets/ls b/data/Termlets/ls
index 814017c..5242d7a 100755
--- a/data/Termlets/ls
+++ b/data/Termlets/ls
@@ -1,6 +1,10 @@
 #!/bin/bash
 
 ls_output=$(ls "$@")
+dir_begin_mark=$(text_menu_start '2')
+dir_end_mark=$(text_menu_end '2')
+file_begin_mark=$(text_menu_start '1')
+file_end_mark=$(text_menu_end '1')
 
 # Surround with additional newlines to facilitate matching (see below)
 ls_output=$'\n'$ls_output$'\n'
@@ -8,9 +12,9 @@ ls_output=$'\n'$ls_output$'\n'
 # TODO: Search for files in directory passed to ls rather than the current directory
 for filename in *; do
 	if [[ -d $filename ]]; then
-		file_substitution="$(text_menu_start '2')$filename$(text_menu_end '2')"
+		file_substitution="$dir_begin_mark$filename$dir_end_mark"
 	else
-		file_substitution="$(text_menu_start '1')$filename$(text_menu_end '1')"
+		file_substitution="$file_begin_mark$filename$file_end_mark"
 	fi
 
 	# Short format ("ls"; each filename on a single line)
diff --git a/data/Termlets/ps b/data/Termlets/ps
index 0fcd924..8ef536d 100755
--- a/data/Termlets/ps
+++ b/data/Termlets/ps
@@ -1,24 +1,26 @@
 #!/bin/bash
 
-ps "$@" |
-
-while IFS= read -r line; do
-	# Position of string "PID" in line
-	pid_index=$(awk -v a="$line" -v b='PID' 'BEGIN{print index(a,b)}')
-
-	if [[ "$pid_index" -gt 0 ]]; then
-		# Header line
-		pid_end=$(($pid_index + 3))
-		modified_line="$line"
-	else
-		# Content line
-		left_part=${line:0:pid_end-1}
-		pid_part=${left_part##* }
-		# Remove pid_part from left_part
-		left_part=${left_part:0:${#left_part}-${#pid_part}}
-		right_part=${line:pid_end-1}
-		modified_line="$left_part$(text_menu_start '3')$pid_part$(text_menu_end '3')$right_part"
-	fi
+# IFS is '\n'
+IFS=$'\012'
+psoutput=($(ps "$@"))
+# Just in case PPID could be displayed before PID, search for ' PID'
+pid_index=$(awk -v a="${psoutput[0]}" -v b=' PID' 'BEGIN{print index(a,b)}')
+# don’t use $() in loops, as it spawns a sub-process, so get markings out of the loop.
+begin_mark=$(text_menu_start '3')
+end_mark=$(text_menu_end '3')
+# last character position of PID display.
+let pid_end=pid_index+4
+# display 1st line as is, then destroy it.
+echo -e ${psoutput[0]}
+unset psoutput[0]
 
+for line in ${psoutput[@]}; do
+	# Content line
+	left_part=${line:0:${pid_end}-1}
+	pid_part=${left_part##* }
+	# Remove pid_part from left_part
+	left_part=${left_part:0:${#left_part}-${#pid_part}}
+	right_part=${line:pid_end-1}
+	modified_line="$left_part$begin_mark$pid_part$end_mark$right_part"
 	echo -e "$modified_line"
 done