diff --git a/.eslintrc.json b/.eslintrc.json
index d1f401c..3f5277c 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -22,6 +22,9 @@
         "browser": true,
         "es6": true
     },
+    "globals": {
+        "tapes": true
+    },
     "parserOptions": {
         "sourceType": "module"
     },
diff --git a/tapes/apple30th.js b/tapes/apple30th.js
index 3b9e29d..de966c7 100644
--- a/tapes/apple30th.js
+++ b/tapes/apple30th.js
@@ -2,8 +2,6 @@
 // Who said that there was no graphics capability on the Apple 1?
 // http://www.applefritter.com/node/24600#comment-60100
 
-/*globals tapes: true */
-
 /*
 C100R
 0280.0FFFR
diff --git a/tapes/applesoft.js b/tapes/applesoft.js
index 01dad5a..5c34fe2 100644
--- a/tapes/applesoft.js
+++ b/tapes/applesoft.js
@@ -1,5 +1,3 @@
-/*globals tapes: true */
-
 tapes['Applesoft'] = {
     script: 'C100R\n6000.7ECDR\n6000R\n',
     tracks: [[
diff --git a/tapes/basic.js b/tapes/basic.js
index 7b5f045..2aab06e 100644
--- a/tapes/basic.js
+++ b/tapes/basic.js
@@ -1,5 +1,3 @@
-/*globals tapes: true */
-
 tapes['BASIC'] = {
     script: 'C100R\nE000.EFFFR\nE000R\n',
     tracks: [[
diff --git a/tapes/blackjack.js b/tapes/blackjack.js
index 3607458..0053b88 100644
--- a/tapes/blackjack.js
+++ b/tapes/blackjack.js
@@ -5,8 +5,6 @@ E2B3R
 RUN
 */
 
-/*globals tapes: true */
-
 tapes['Blackjack'] = {
     script: 'C100R\n004A.00FFR 0800.0FFFR\nE2B3R\nRUN\n',
     tracks: [[ // 004A.00FF
diff --git a/tapes/checkers.js b/tapes/checkers.js
index aefbec8..daa7341 100644
--- a/tapes/checkers.js
+++ b/tapes/checkers.js
@@ -5,8 +5,6 @@ E2B3R
 RUN
 */
 
-/*globals tapes: true */
-
 tapes['Checkers'] = {
     script: 'C100R\n004A.00FFR 0300.0FFFR\nE2B3R\nRUN\n',
     tracks: [[ // 004A.00FF
diff --git a/tapes/codebreaker.js b/tapes/codebreaker.js
index 368fcfb..02e0a0f 100644
--- a/tapes/codebreaker.js
+++ b/tapes/codebreaker.js
@@ -1,5 +1,3 @@
-/*globals tapes: true */
-
 tapes['Codebreaker'] = {
     script: 'C100R\n0280.0BFFR E000.EFFFR\n280R\n',
     tracks: [[
diff --git a/tapes/hamurabi.js b/tapes/hamurabi.js
index e99c0f9..cbca867 100644
--- a/tapes/hamurabi.js
+++ b/tapes/hamurabi.js
@@ -5,8 +5,6 @@ E2B3R
 RUN
 */
 
-/*globals tapes: true */
-
 tapes['Hamurabi'] = {
     script: 'C100R\n004A.00FFR 0300.0FFFR\nE2B3R\nRUN\n',
     tracks: [[ // 004A.00FF
diff --git a/tapes/life.js b/tapes/life.js
index 04fc730..2a8d187 100644
--- a/tapes/life.js
+++ b/tapes/life.js
@@ -10,8 +10,6 @@ C100R
 2000R
 */
 
-/*globals tapes: true */
-
 tapes['Life'] = {
     script: 'C100R\n2000.21B7R\n2000R\n',
     tracks: [[ // 2000.3FFFR
diff --git a/tapes/little_tower.js b/tapes/little_tower.js
index b45f700..52a11dd 100644
--- a/tapes/little_tower.js
+++ b/tapes/little_tower.js
@@ -13,8 +13,6 @@ C100R
 300R
 */
 
-/*globals tapes: true */
-
 tapes['Little Tower'] = {
     script: 'C100R\n0300.14CDR\n300R\n',
     tracks: [[ // 0300.14CD
diff --git a/tapes/lunar_lander.js b/tapes/lunar_lander.js
index 74ce8f8..7baeb24 100644
--- a/tapes/lunar_lander.js
+++ b/tapes/lunar_lander.js
@@ -4,8 +4,6 @@ C100R
 300R
 */
 
-/*globals tapes: true */
-
 tapes['Lunar Lander'] = {
     script: 'C100R\n0300.09B8R\n300R\n',
     tracks: [[ // 0300.09B8
diff --git a/tapes/matrix.js b/tapes/matrix.js
index a1a87a8..edf684b 100644
--- a/tapes/matrix.js
+++ b/tapes/matrix.js
@@ -5,8 +5,6 @@ E2B3R
 RUN
 */
 
-/*globals tapes: true */
-
 tapes['Matrix'] = {
     script: 'C100R\n004A.00FFR 0800.0FFFR\nE2B3R\nRUN\n',
     tracks: [[ // 004A.00FF
diff --git a/tapes/microchess.js b/tapes/microchess.js
index 32b7bd2..893f294 100644
--- a/tapes/microchess.js
+++ b/tapes/microchess.js
@@ -4,8 +4,6 @@ C100R
 300R
 */
 
-/*globals tapes: true */
-
 tapes['Microchess'] = {
     script: 'C100R\n0300.0BC7R\n300R\n',
     tracks: [[ // 0300.0BC7
diff --git a/tapes/monitor.js b/tapes/monitor.js
index d606e4a..eef0fb9 100644
--- a/tapes/monitor.js
+++ b/tapes/monitor.js
@@ -4,8 +4,6 @@ C100R
 F3DR
 */
 
-/*globals tapes: true */
-
 tapes['Monitor/Disassembler'] = {
     script: 'C100R\n0800.0FFFR\nF3DR\n',
     tracks: [[ // 0800.0FFF
diff --git a/tapes/puzz15.js b/tapes/puzz15.js
index ff56b4a..0712205 100644
--- a/tapes/puzz15.js
+++ b/tapes/puzz15.js
@@ -25,8 +25,6 @@
  *
  */
 
-/*globals tapes: true */
-
 tapes['15 Puzzle'] = {
     script: 'C100R\n0300.06E5R\n0300R\n',
     tracks: [[
diff --git a/tapes/slots.js b/tapes/slots.js
index 793e1b5..690e67f 100644
--- a/tapes/slots.js
+++ b/tapes/slots.js
@@ -5,8 +5,6 @@ E2B3R
 RUN
 */
 
-/*globals tapes: true */
-
 tapes['Slots'] = {
     script: 'C100R\n004A.00FFR 0300.0FFFR\nE2B3R\nRUN\n',
     tracks: [[ // 004A.00FF
diff --git a/tapes/startrek.js b/tapes/startrek.js
index e3a7fa0..db2f546 100644
--- a/tapes/startrek.js
+++ b/tapes/startrek.js
@@ -5,8 +5,6 @@ E2B3R
 RUN
 */
 
-/*globals tapes: true */
-
 tapes['Star Trek'] = {
     script: 'C100R\n004A.00FFR 0300.0FFFR\nE2B3R\nRUN\n',
     tracks: [[ // 004A.00FF
diff --git a/tapes/startrek2003.js b/tapes/startrek2003.js
index 00bfa70..13d0d9b 100644
--- a/tapes/startrek2003.js
+++ b/tapes/startrek2003.js
@@ -5,8 +5,6 @@ E2B3R
 RUN
 */
 
-/*globals tapes: true */
-
 tapes['Star Trek 2003'] = {
     script: 'C100R\n004A.00FFR 0300.3FFFR\nE2B3R\nRUN\n',
     tracks: [[ // 004A.00FF
diff --git a/tapes/volksforth.js b/tapes/volksforth.js
index 193be25..3e38881 100644
--- a/tapes/volksforth.js
+++ b/tapes/volksforth.js
@@ -1,5 +1,3 @@
-/*globals tapes: true */
-
 tapes['Volksforth'] = {
     script: 'C100R\n1000.449FR\n1000R\n',
     tracks: [[
diff --git a/tapes/wumpus.js b/tapes/wumpus.js
index 158ae79..8a96da5 100644
--- a/tapes/wumpus.js
+++ b/tapes/wumpus.js
@@ -5,8 +5,6 @@ E2B3R
 RUN
 */
 
-/*globals tapes: true */
-
 tapes['Wumpus'] = {
     script: 'C100R\n004A.00FFR 0300.033FR 0400.3FFFR\nE2B3R\nRUN\n',
     tracks: [[ // 004A.00FF
diff --git a/tapes/wumpus2.js b/tapes/wumpus2.js
index c12b632..0c9f774 100644
--- a/tapes/wumpus2.js
+++ b/tapes/wumpus2.js
@@ -5,8 +5,6 @@ E2B3R
 RUN
 */
 
-/*globals tapes: true */
-
 tapes['Wumpus'] = {
     script: 'C100R\n004A.00FFR 0300.0FFFR\nE2B3R\nRUN\n',
     tracks: [[ // 004A.00FF