This file is indexed.

/usr/share/ams/demos/example_env_vcf.ams is in ams 2.0.1-5.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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Module 7 1 634 76 0 0
Port 0 0 1 4
Port 1 0 1 4
FSlider 1 0 8192 0 0 16384 1
FSlider 1 1 16384 0 0 16384 1
FSlider 1 2 16384 0 0 16384 1
ComboBox 1 0 1 1
Module 11 3 188 48 0 0
Port 0 0 3 9
FSlider 3 0 0 0 0 16384 1
FSlider 3 1 935 0 0 16384 1
FSlider 3 2 98 0 0 16384 1
FSlider 3 3 640 0 0 16384 1
FSlider 3 4 7479 0 0 16384 1
FSlider 3 5 819 0 0 16384 1
FSlider 3 6 16384 0 1638 163840 1
Module 2 4 516 40 0 0
Port 0 0 4 3
Port 2 0 4 6
FSlider 4 0 0 0 0 163840 1
FSlider 4 1 0 0 0 163840 1
FSlider 4 2 8192 0 0 32768 1
FSlider 4 3 8192 0 0 32768 1
FSlider 4 4 26759 0 0 32768 1
Module 1 5 257 225 0 0
Port 1 1 5 9
Port 2 0 5 7
Port 4 1 5 7
FSlider 5 0 0 0 0 16384 1
FSlider 5 1 -37725 1 -113176 37725 1
FSlider 5 2 0 0 0 163840 1
FSlider 5 3 8192 0 163 16220 1
FSlider 5 4 1574 0 0 163840 1
FSlider 5 5 0 0 0 163840 1
ISlider 5 0 1 1
ISlider 5 1 1 1
ISlider 5 2 1 1
ComboBox 5 0 0 1
Module 9 6 401 152 0 0
Port 0 3 6 5
Port 1 1 6 9
Port 2 1 6 3
FSlider 6 0 7380 0 0 163840 1
FSlider 6 1 59626 0 37393 91693 1
FSMIDI 6 1 10 0 1
FSlider 6 2 23617 0 0 163840 1
FSlider 6 3 0 0 0 163840 1
FSlider 6 4 15117 0 163 16384 1
FSlider 6 5 0 0 0 16384 1
ComboBox 6 0 6 1
Module 3 7 128 251 0 0
Port 0 0 7 9
FSlider 7 0 30915 1 -75451 75451 1
FSlider 7 1 0 0 0 102940 1
Module 10 9 6 23 0 0
FSlider 9 0 129 0 -16384 16384 1
FSMIDI 9 0 13 0 0
ISlider 9 0 24 1
ComboBox 9 0 0 1
Comment 0 0 386 318 306 182
#PARA# 0 0 0
Here, both the pulse width and the frequency of the VCO wave are modulated by a LFO. The inverse envelope modifies the cutoff frequency of the VCF. You can reduce (or stop) this effect with the "Exp. FM Gain" slider of the VCF.  
#ARAP#
#PARA# 0 0 1
 
#ARAP#
#PARA# 0 0 2
Try out the pitchbender and modulation wheels!  
#ARAP#
#PARA# 0 0 3
 
#ARAP#
#PARA# 0 0 4
 
#ARAP#
#PARA# 0 0 5
 
#ARAP#
#PARA# 0 0 6
 
#ARAP#
#PARA# 0 0 7
 
#ARAP#
#PARA# 0 0 8
 
#ARAP#
#PARA# 0 0 9
 
#ARAP#
#PARA# 0 0 10
 
#ARAP#
#PARA# 0 0 11
 
#ARAP#
#PARA# 0 0 12
 
#ARAP#
#PARA# 0 0 13
 
#ARAP#
#PARA# 0 0 14
 
#ARAP#
#PARA# 0 0 15
 
#ARAP#
#PARA# 0 0 16
 
#ARAP#