Update runtime files
diff --git a/runtime/doc/textprop.txt b/runtime/doc/textprop.txt
index 135db02..b4aeaf7 100644
--- a/runtime/doc/textprop.txt
+++ b/runtime/doc/textprop.txt
@@ -1,4 +1,4 @@
-*textprop.txt* For Vim version 8.1. Last change: 2018 Dec 27
+*textprop.txt* For Vim version 8.1. Last change: 2018 Dec 30
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -70,11 +70,14 @@
The number 123 is smaller than 4567.
-To highlight the numbers: >
+To highlight the numbers in this text: >
call prop_type_add('number', {'highlight': 'Constant'})
call prop_add(11, 12, {'length': 3, 'type': 'number'})
call prop_add(11, 32, {'length': 4, 'type': 'number'})
+Try inserting or deleting lines above the text, you will see that the text
+properties stick to the text, thus the line number is adjusted as needed.
+
Setting "start_incl" and "end_incl" is useful when white space surrounds the
text, e.g. for a function name. Using false is useful when the text starts
and/or ends with a specific character, such as the quote surrounding a string.