diff --git a/strings/488A489848 b/strings/488A489848
new file mode 100644
index 00000000..9d3cbe70
--- /dev/null
+++ b/strings/488A489848
@@ -0,0 +1,15 @@
+Preserve registers on stack
+
+This is the standard form of saving the A X and Y registers on the stack
+
+PHA
+TXA
+PHA
+TYA
+PHA
+
+See, for example: 
+
+http://6502.org/tutorials/register_preservation.html
+
+Not copyrightable.
diff --git a/strings/68A868AA b/strings/68A868AA
new file mode 100644
index 00000000..840186cf
--- /dev/null
+++ b/strings/68A868AA
@@ -0,0 +1,5 @@
+PLA / TAY / PLA / TAX sequence
+
+This is a common sequence for restoring registers from the stack.
+It is a fragment of the reverse of pushing the registers A X and Y
+in alphabetic order. Not copyrightable.
diff --git a/strings/68A868AA6840 b/strings/68A868AA6840
new file mode 100644
index 00000000..58b80c5c
--- /dev/null
+++ b/strings/68A868AA6840
@@ -0,0 +1,16 @@
+End of interrupt restore registers and resume sequence
+
+This is the standard form of returning from an interrupt on a 6502:
+
+PLA
+TAY
+PLA
+TAX
+PLA
+RTI
+
+See, for example: 
+
+http://6502.org/tutorials/register_preservation.html
+
+Not copyrightable.
diff --git a/strings/820260 b/strings/820260
new file mode 100644
index 00000000..699666b7
--- /dev/null
+++ b/strings/820260
@@ -0,0 +1,5 @@
+tail end of access to $0282, followed by RTS
+
+This small fragment is a return from subroutine, where
+the last thing the subroutine does is access memory location $0282.
+This is not copyrightable.
diff --git a/strings/840260 b/strings/840260
new file mode 100644
index 00000000..b2fa208a
--- /dev/null
+++ b/strings/840260
@@ -0,0 +1,5 @@
+tail end of access to $0284, followed by RTS
+
+This small fragment is a return from subroutine, where
+the last thing the subroutine does is access memory location $0284.
+This is not copyrightable.
diff --git a/strings/8A489848 b/strings/8A489848
new file mode 100644
index 00000000..9d3cbe70
--- /dev/null
+++ b/strings/8A489848
@@ -0,0 +1,15 @@
+Preserve registers on stack
+
+This is the standard form of saving the A X and Y registers on the stack
+
+PHA
+TXA
+PHA
+TYA
+PHA
+
+See, for example: 
+
+http://6502.org/tutorials/register_preservation.html
+
+Not copyrightable.
diff --git a/strings/A868AA6840 b/strings/A868AA6840
new file mode 100644
index 00000000..58b80c5c
--- /dev/null
+++ b/strings/A868AA6840
@@ -0,0 +1,16 @@
+End of interrupt restore registers and resume sequence
+
+This is the standard form of returning from an interrupt on a 6502:
+
+PLA
+TAY
+PLA
+TAX
+PLA
+RTI
+
+See, for example: 
+
+http://6502.org/tutorials/register_preservation.html
+
+Not copyrightable.
diff --git a/strings/B00320 b/strings/B00320
new file mode 100644
index 00000000..b6551cbc
--- /dev/null
+++ b/strings/B00320
@@ -0,0 +1,11 @@
+Branch over following JSR instruction
+A branch with argument $03 skips the following 3 bytes.
+A JSR instruction has the initial byte value of $20.
+Therefore $F0 $XX $20 is part of a 
+Bxx +
+JSR $xxxx
+*
+
+instruction sequence.
+This is a very common construction, and the logical way to 
+conditionally call a routines, and therefore is not copyrightable.
diff --git a/strings/B0034C b/strings/B0034C
new file mode 100644
index 00000000..eae67630
--- /dev/null
+++ b/strings/B0034C
@@ -0,0 +1,10 @@
+Jump conditionally
+
+Conditionally take a JMP
+
+Bxx +
+JMP $xxxx
+*
+
+This is a very common instruction sequence.
+Not copyrightable.
diff --git a/strings/F0034C b/strings/F0034C
new file mode 100644
index 00000000..eae67630
--- /dev/null
+++ b/strings/F0034C
@@ -0,0 +1,10 @@
+Jump conditionally
+
+Conditionally take a JMP
+
+Bxx +
+JMP $xxxx
+*
+
+This is a very common instruction sequence.
+Not copyrightable.