diff --git a/doc/img/.~lock.algorithm.odg# b/doc/img/.~lock.algorithm.odg#
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-,vkrivokuca,italix32.idiap.ch,22.05.2017 14:21,file:///remote/idiap.svm/home.active/vkrivokuca/.config/libreoffice/4;
\ No newline at end of file
diff --git a/doc/img/algorithm.odg b/doc/img/algorithm.odg
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diff --git a/doc/struct_bio_rec_sys.rst b/doc/struct_bio_rec_sys.rst
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--- a/doc/struct_bio_rec_sys.rst
+++ b/doc/struct_bio_rec_sys.rst
@@ -26,6 +26,7 @@ Fig. 2 shows the enrollment and identification stages in a typical biometric *id
 
    Enrollment and identification in a typical biometric identification system.
 
+In the figures above:
 * The "Pre-processor" cleans up the raw biometric data to make recognition easier (e.g., crops the face image to get rid of the background).
 * The "Feature Extractor" extracts the most important features for recognition, from the pre-processed biometric data.
 * The "Model Database" stores each person's extracted feature set in the form of a representative model for that person in the system database, typically alongside the person's ID.