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diff --git a/sequence diagram/Diagram-sequence-eng.pdf b/sequence diagram/Diagram-sequence-eng.pdf
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diff --git a/use-case diagram/Diagram-use-case-eng.drawio b/use-case diagram/Diagram-use-case-eng.drawio
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diff --git a/use-case diagram/Diagram-use-case-eng.pdf b/use-case diagram/Diagram-use-case-eng.pdf
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diff --git a/use-case diagram/Діаграма-use-case-ua.pdf b/use-case diagram/Діаграма-use-case-ua.pdf
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