diff --git a/articles/Linear filter - Wikipedia/Linear filter - Wikipedia.xopp.xml b/articles/Linear filter - Wikipedia/Linear filter - Wikipedia.xopp.xml
index 95ed963..313ab24 100644
--- a/articles/Linear filter - Wikipedia/Linear filter - Wikipedia.xopp.xml
+++ b/articles/Linear filter - Wikipedia/Linear filter - Wikipedia.xopp.xml
@@ -3,7 +3,36 @@
Xournal++ document - see https://github.com/xournalpp/xournalpp
-
+
+ 46.52561844 88.11909413 177.60808366 88.11909413
+ 118.45195034 116.58289198 408.35914104 116.58289198
+ 492.72370141 115.71725663 550.79885328 115.71725663
+ 46.03237321 131.81795024 83.27373513 131.81795024
+ 105.95217045 131.49763031 151.75613182 131.49763031
+ 188.14013543 131.74139262 446.56698197 131.74139262
+ 459.86771100 132.02092309 523.00908093 132.02092309
+ 45.99735022 148.65857475 542.44644351 148.65857475
+ 46.05600083 163.83949928 495.70765330 163.83949928
+ 506.92544961 171.61969329 553.61179317 171.61969329
+ 44.45796654 187.02712657 167.32672769 187.02712657
+ 329.63505837 186.58518343 531.22668367 186.58518343
+ 45.39874942 203.16317563 275.33128976 203.16317563
+ 308.00637260 202.06277734 425.79163101 202.06277734
+ 486.51852167 203.52677274 550.82548603 203.52677274
+ 45.97171637 216.68016991 369.34567610 216.68016991
+ 453.70288508 218.05320872 552.70919124 218.05320872
+ 44.38702636 234.58438131 549.54228288 234.58438131
+ 45.45320415 252.87128910 85.15975155 252.87128910
+ 128.77404538 244.57170012 546.73943270 244.57170012
+ 46.15866233 260.12835083 548.74556497 260.12835083
+ 44.32779107 276.67373898 70.31164607 276.67373898
+ 502.48414462 163.46716648 38.45463616 300.32169792
+ 47.79230429 302.38753848 441.03872844 302.38753848
+ 455.76872564 304.30468897 546.93238392 304.30468897
+ 47.24267835 320.73898946 325.27603503 320.73898946
+ 361.64944231 328.63581978 522.67234326 328.63581978
+ 41.65662025 343.49028243 542.35644447 343.49028243
+